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An underground city is a series of linked subterranean spaces that may provide a defensive refuge; a place for living, working or shopping; a transit system; mausolea; wine or storage cellars; cisterns or drainage channels; or several of these. Underground cities may be currently active modern creations or they may be historic including ancient sites, some of which may be all or partially open to the public. The term may also refer to a network of tunnels that connects buildings beneath street level that may house office blocks,
shopping mall A shopping mall (or simply mall) is a North American term for a large indoor shopping center, usually Anchor tenant, anchored by department stores. The term "mall" originally meant pedestrian zone, a pedestrian promenade with shops along it (that ...
s,
metro station A metro station or subway station is a station for a rapid transit system, which as a whole is usually called a "metro" or "subway". A station provides a means for passengers to purchase tickets, board trains, and evacuate the system in t ...
s,
theatre Theatre or theater is a collaborative form of performing art that uses live performers, usually actors or actresses, to present the experience of a real or imagined event before a live audience in a specific place, often a stage. The perfor ...
s, and other attractions. These passages can usually be accessed through the public space of any of the buildings connecting to them, and sometimes have separate entries as well. This latter definition encompasses many modern structures, whereas the former more generally covers tunnel systems from ancient times to the present day. Underground cities are especially functional in cities with very cold or hot climates, because they permit activities to be comfortably accessible year round without regard to the weather. Underground cities are similar in nature to skyway systems and may include some buildings linked by skyways or above-ground corridors rather than underground. Some cities also have tunnels that have been abandoned.


Argentina

Buenos Aires Buenos Aires ( or ; ), officially the Autonomous City of Buenos Aires ( es, link=no, Ciudad Autónoma de Buenos Aires), is the capital and primate city of Argentina. The city is located on the western shore of the Río de la Plata, on South ...
, capital of
Argentina Argentina (), officially the Argentine Republic ( es, link=no, República Argentina), is a country in the southern half of South America. Argentina covers an area of , making it the List of South American countries by area, second-largest ...
, has an extensive number of underground cities in its Subte. Most stations have small shops, bars and kiosks, while main hubs interconnect through underground pedestrian walkways with railroad stations, governmental buildings, or shopping centres. Some have additional mall-like mezzanine levels, with the Centro Obelisk of Buenos Aires area (three lines, four underground levels), Estación Retiro, Estación Constitución, Estación Once, and
Federico Lacroze railway station Federico Lacroze railway station (Estación Federico Lacroze in Spanish) is a passenger railway station in Buenos Aires, Argentina. The station is located in the city's outlying ''barrio'' (neighbourhood) of Chacarita in a predominantly reside ...
being the most important ones.


Australia

Sydney Sydney ( ) is the capital city of the state of New South Wales, and the most populous city in both Australia and Oceania. Located on Australia's east coast, the metropolis surrounds Sydney Harbour and extends about towards the Blue Mounta ...
has a series of underground shopping malls around the Town Hall underground station. The tunnels run south to the George Street cinema district, west under the town hall, and north to Pitt Street Mall through the Queen Victoria Building. The northern branch links Queen Victoria Building with Galleries Victoria, Sydney Central Plaza (which in turn links underground to
Westfield Sydney Westfield Sydney is a large, upmarket shopping centre in the Sydney central business district. It is located underneath the Sydney Tower and is located on Pitt Street Mall, adjacent to the MidCity, Glasshouse and near The Strand Arcade. Histo ...
and internally above ground to Centrepoint, Imperial Arcade, Skygarden, Glasshouse and 25 Martin Place). The linked centres run for over . In 2005, Westfield Corporation submitted a development application to link Sydney Central Plaza underground with 3 other properties on Pitt Street Mall and extend the tunnel network by a further or more.
Perth Perth is the capital and largest city of the Australian state of Western Australia. It is the fourth most populous city in Australia and Oceania, with a population of 2.1 million (80% of the state) living in Greater Perth in 2020. Perth is ...
has a small network of underground shopping malls running from the St Georges Terrace entrance to Trinity Arcade to Murray Street Mall. The small town of
Coober Pedy Coober Pedy () is a town in northern South Australia, north of Adelaide on the Stuart Highway. The town is sometimes referred to as the "opal capital of the world" because of the quantity of precious opals that are mined there. Coober Pedy ...
in northern
South Australia South Australia (commonly abbreviated as SA) is a States and territories of Australia, state in the southern central part of Australia. It covers some of the most arid parts of the country. With a total land area of , it is the fourth-largest o ...
has numerous underground residences and other facilities. The area was and is extensively mined for
opal Opal is a hydrated amorphous form of silica (SiO2·''n''H2O); its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Due to its amorphous property, it is classified as a mineraloid, unlike crystalline form ...
, and the settlers lived underground to escape the scorching daytime heat, often exceeding .


Canada

The cold-winter northern
continental climate Continental climates often have a significant annual variation in temperature (warm summers and cold winters). They tend to occur in the middle latitudes (40 to 55 north), within large landmasses where prevailing winds blow overland bringing so ...
of much of Canada makes underground pedestrian malls particularly useful in many cities. *
Edmonton Edmonton ( ) is the capital city of the Canadian province of Alberta. Edmonton is situated on the North Saskatchewan River and is the centre of the Edmonton Metropolitan Region, which is surrounded by Alberta's central region. The city an ...
, Alberta, has a small system of tunnels and above-ground skyways called the
Pedway Pedways (short for pedestrian walkways) are elevated or underground walkways, often connecting urban high-rises to each other, other buildings, or the street. They provide quick and comfortable movement from building to building, away from traff ...
connecting buildings and LRT stations of the downtown core. * Halifax, Nova Scotia ('' Downtown Halifax Link''), where no point is more than 10 minutes casual walking distance from any other one. *
Montreal Montreal ( ; officially Montréal, ) is the second-most populous city in Canada and most populous city in the Canadian province of Quebec. Founded in 1642 as '' Ville-Marie'', or "City of Mary", it is named after Mount Royal, the triple- ...
, Quebec, '' Underground city'', or ''la ville souterraine'' in French, is the largest underground network in the world. Its of tunnel cover more than 41 city blocks (about ). Access through the RÉSO can be made to apartment buildings, hotels, offices, banks, and universities, as well as public spaces like retail shops and malls, concert halls, cinemas, the
Bell Centre Bell Centre (), formerly known as Molson Centre (), is a multi-purpose arena located in Montreal, Quebec, Canada. Opened on March 16, 1996, it is the home arena of the Montreal Canadiens of the National Hockey League (NHL), replacing the Montr ...
hockey arena, museums, seven metro stations, two train stations ( Lucien-L'Allier and Gare Centrale), a
bus terminal A bus station or a bus interchange is a structure where city or intercity buses stop to pick up and drop off passengers. While the term bus depot can also be used to refer to a bus station, it generally refers to a bus garage. A bus station is ...
(
Réseau de transport de Longueuil Réseau de transport de Longueuil (RTL) ( en, Longueuil Transit Network) is a public transit system in the city of Longueuil, Quebec, Canada, and nearby communities on the South Shore of Montreal. The RTL had an annual ridership of 34,447,686 in ...
and other transit authorities), and other areas. It connects 80% of office space and 35% of commercial space in downtown Montreal. **The network began as a connection between
Place Ville Marie Place Ville Marie (PVM for short) is a large office and shopping complex skyscraper in Downtown Montreal, Quebec, Canada, comprising four office buildings and an underground shopping plaza. It serves as the main and official headquarters for Roya ...
, the
Queen Elizabeth Hotel Fairmont The Queen Elizabeth (french: Fairmont Le Reine Élizabeth) is a historic grand hotel in Montreal, Quebec, Canada. With 950 rooms and 21 floors it is the largest hotel in the province of Quebec, and the second largest Fairmont hotel ...
and the Gare Centrale. **More than 2,000 shops and 40 cinemas line the passageways. Tourists often visit attractions in the underground city, which is used by an average of half a million Montrealers per day. **Eight metro stations link to smaller networks that are not yet part of the central network, such as Berri UQAM in the eastern part of downtown and Pie-IX which links venues from the
1976 Summer Olympics Events January * January 3 – The International Covenant on Economic, Social and Cultural Rights enters into force. * January 5 – The Pol Pot regime proclaims a new constitution for Democratic Kampuchea. * January 11 – The 1976 ...
. *
Carleton University Carleton University is an English-language public research university in Ottawa, Ontario, Canada. Founded in 1942 as Carleton College, the institution originally operated as a private, non-denominational evening college to serve returning Wo ...
in
Ottawa Ottawa (, ; Canadian French: ) is the capital city of Canada. It is located at the confluence of the Ottawa River and the Rideau River in the southern portion of the province of Ontario. Ottawa borders Gatineau, Quebec, and forms the c ...
, Ontario, has a tunnel network which connects ten residence buildings with other buildings on its main campus. The city also has an underground concourse at the Place de Ville office complex in the downtown business district, connecting 4 office buildings containing over of leasable space, and 2 hotels with 900 rooms combined. There are plans to expand the underground network after the Confederation Line, a rapid transit line featuring three downtown subway stations, is completed. It is estimated there will be as many as 20 buildings with direct indoor connections to the downtown subway portion, or 4 million square feet of office space, of retail, 1400 hotel rooms and the Ottawa Convention Centre. *
Saskatoon Saskatoon () is the largest city in the Provinces and territories of Canada, Canadian province of Saskatchewan. It straddles a bend in the South Saskatchewan River in the central region of the province. It is located along the Trans-Canada Hig ...
, Saskatchewan – On the campus of the
University of Saskatchewan A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United State ...
a tunnel system connects several of the buildings on campus, this is augmented with overhead walkways that further extend the network. *
St. John's, Newfoundland and Labrador St. John's is the capital and largest city of the Canadian province of Newfoundland and Labrador, located on the eastern tip of the Avalon Peninsula on the island of Newfoundland. The city spans and is the easternmost city in North America ...
– At the main campus of
Memorial University of Newfoundland Memorial University of Newfoundland, also known as Memorial University or MUN (), is a public university in the province of Newfoundland and Labrador, based in St. John's, with satellite campuses in Corner Brook, elsewhere in Newfoundland and ...
are the MUNnels, a tunnel system, in which all the main buildings are connected, though there are also some elevated walkways. *
Toronto Toronto ( ; or ) is the capital city of the Canadian province of Ontario. With a recorded population of 2,794,356 in 2021, it is the most populous city in Canada and the fourth most populous city in North America. The city is the anch ...
, Ontario (" PATH"), comprises of walkways and 1,200 shops. It links many important buildings and attractions downtown to six TTC subway stations. PATH accommodates 100,000 pedestrians daily, and PATH businesses host the world's largest underground sidewalk sale once annually. **The PATH network in Toronto is the largest underground shopping complex in the world with . **Toronto also has a separate, smaller "underground city" connecting several building complexes and two subway stations on Bloor Street. *
Vancouver Vancouver ( ) is a major city in western Canada, located in the Lower Mainland region of British Columbia. As the most populous city in the province, the 2021 Canadian census recorded 662,248 people in the city, up from 631,486 in 2016. ...
, British Columbia, has two
shopping mall A shopping mall (or simply mall) is a North American term for a large indoor shopping center, usually Anchor tenant, anchored by department stores. The term "mall" originally meant pedestrian zone, a pedestrian promenade with shops along it (that ...
s, Pacific Centre and Vancouver Centre, that are interconnected and extend over three city blocks, containing more than 200 stores that weaves above and below ground level. These malls have metro access at Granville SkyTrain Station on the Expo Line and Vancouver City Centre SkyTrain Station on the Canada Line. There are also restricted tunnels and parking garage connections connecting the Pacific Centre structure to Robson Square and the Courthouse building. Other connections exist between SkyTrain stations and surrounding buildings such is the case with the
Burrard Station Burrard is an underground station on the Expo Line of Metro Vancouver's SkyTrain rapid transit system. The station is located in Downtown Vancouver on Burrard Street, where Melville and Dunsmuir Streets meet, and is the western terminus of t ...
connections to the Bentall Centre and the Royal Centre and Waterfront Station's links with Canada Place and the
Sinclair Centre Sinclair Centre is an upscale shopping mall in Downtown Vancouver, British Columbia. It is located at 757 West Hastings Street between Granville and Howe streets. The centre comprises four buildings that were restored and connected by a new atri ...
. *
Winnipeg Winnipeg () is the capital and largest city of the province of Manitoba in Canada. It is centred on the confluence of the Red and Assiniboine rivers, near the longitudinal centre of North America. , Winnipeg had a city population of 749 ...
, Manitoba, has a smaller (mainly commercial office) area located underground in the downtown core below Portage and Main. Several of the downtown office towers have subterranean entrances to the complex allowing employees and visitors to bypass the downtown traffic and avoid the cold winter temperatures Winnipeg regularly experiences. The system links with the skyway system known as the Winnipeg Walkway. Also the
University of Manitoba The University of Manitoba (U of M, UManitoba, or UM) is a Canadian public research university in the province of Manitoba.Charlottetown Charlottetown is the capital and largest city of the Canadian province of Prince Edward Island, and the county seat of Queens County. Named after Queen Charlotte, Charlottetown was an unincorporated town until it was incorporated as a city in ...
, Prince Edward Island, has a tiny system. A pedestrian tunnel connects the Confederation Center of the Arts with the Confederation Court Mall. The mall also connects to The Holman Grand Hotel. The Mall is separated into a main section and a much smaller section connected by an overground walkway. This small section of the mall connects to a 338 spot
parking garage A multistorey car park ( British and Singapore English) or parking garage (American English), also called a multistory, parking building, parking structure, parkade (mainly Canadian), parking ramp, parking deck or indoor parking, is a bui ...
, which itself connects to the Homburg Financial Building, and has a separate public entry. Apart from the hotel, two additional office buildings are on top and can be assessed through the mall, a building owned by National Bank, and a building owned by BDC.


Chile

Santiago Santiago (, ; ), also known as Santiago de Chile, is the capital and largest city of Chile as well as one of the largest cities in the Americas. It is the center of Chile's most densely populated region, the Santiago Metropolitan Region, whos ...
has some elements of an underground city in its "Metro" subway system. While all stations have a small mezzanine level above the tracks for ticket purchase, some key stations have extensive areas of shops and kiosks in addition. Some stations even have an additional mall-like level between the street and the mezzanine levels.


China

*
Beijing } Beijing ( ; ; ), Chinese postal romanization, alternatively romanized as Peking ( ), is the Capital city, capital of the China, People's Republic of China. It is the center of power and development of the country. Beijing is the world's Li ...
built an extensive tunnel network called the Underground City ( zh, t=地下城, s=地下城, p=Dìxià Chéng) during the Sino-Soviet conflict, supposedly covering 85 km2, falling into disuse in the 1970s. It was opened in 2000 to the public and tourists, but closed in 2008 for renovations. , all "official" remaining entrances appear to be closed. *
Guangzhou Guangzhou (, ; ; or ; ), also known as Canton () and Chinese postal romanization, alternatively romanized as Kwongchow or Kwangchow, is the Capital city, capital and largest city of Guangdong Provinces of China, province in South China, sou ...
has at least 16 different underground networks. **The largest underground network being the one in Zhujiang New Town connecting the commercial basements of over 35 office towers and malls surrounding the Zhujiang New Town Central Park and extends to Zhujiang New Town, Guangzhou Women and Children's Medical Center, Huangpu Dadao and Huacheng Dadao metro stations. The mall portion under the Zhujiang New Town Central Park alone totals at least of commercial space. **In addition there are large subterranean retail tunnels that surround several
Guangzhou Metro The Guangzhou Metro () ( and ) is the rapid transit system of the city of Guangzhou in Guangdong Province of China. It is operated by the state-owned Guangzhou Metro Corporation and was the fourth metro system to be built in mainland China, af ...
stations such as Tiyu Xilu,
Tianhe Sports Center Tianhe Stadium () is a multi-purpose stadium in Tianhe District, Guangzhou, Guangdong, China. It is currently used for football matches. History Construction of the stadium began on 4 July 1984 at the former site of Guangzhou Tianhe Airport. ...
, Martyrs' Park,
Guangzhou railway station Guangzhou railway station serves the city of Guangzhou. It sits on the high speed Guangshen railway just west of Guangzhou East. CRH trains from Guangzhou serves Shenzhen six times daily. Services from this station include trains to Beijing ( ...
and Guangzhou East railway station. **Smaller networks of subterranean retail tunnels surround several
Guangzhou Metro The Guangzhou Metro () ( and ) is the rapid transit system of the city of Guangzhou in Guangdong Province of China. It is operated by the state-owned Guangzhou Metro Corporation and was the fourth metro system to be built in mainland China, af ...
stations such as Chen Clan Academy, Jiangnan West (江南新地商业街), Gongyuanqian *
Harbin Harbin (; mnc, , v=Halbin; ) is a sub-provincial city and the provincial capital and the largest city of Heilongjiang province, People's Republic of China, as well as the second largest city by urban population after Shenyang and largest c ...
has a number of large, multi-level underground shopping areas, originally built for air defense. The largest is at the roundabout intersection of Xida Zhi street and Hongjun street where three levels of markets following streets from four directions meet under the giant snowflake atrium. *
Hangzhou Hangzhou ( or , ; , , Standard Chinese, Standard Mandarin pronunciation: ), also Chinese postal romanization, romanized as Hangchow, is the capital and most populous city of Zhejiang, China. It is located in the northwestern part of the prov ...
has an underground mall in Wulin Square connected to a
subway station A metro station or subway station is a station for a rapid transit system, which as a whole is usually called a "metro" or "subway". A station provides a means for passengers to purchase tickets, board trains, and evacuate the system in th ...
of the same name and nearby office buildings. *
Nanjing Nanjing (; , Mandarin pronunciation: ), Postal Map Romanization, alternately romanized as Nanking, is the capital of Jiangsu Provinces of China, province of the China, People's Republic of China. It is a sub-provincial city, a megacity, and t ...
has an underground mall around Xinjiekou metro station. *
Qingdao Qingdao (, also spelled Tsingtao; , Mandarin: ) is a major city in eastern Shandong Province. The city's name in Chinese characters literally means " azure island". Located on China's Yellow Sea coast, it is a major nodal city of the One Belt ...
has two small underground shopping areas, one at the head of the Zhanqiao (pier) and one west of the Qingdao guest house. *
Shanghai Shanghai (; , , Standard Chinese, Standard Mandarin pronunciation: ) is one of the four Direct-administered municipalities of China, direct-administered municipalities of the China, People's Republic of China (PRC). The city is located on the ...
has a few underground networks, most notably at People's Square metro station, wherein the line 2 station has a second mezzanine full of shops and Line 1 is connected to a large underground shopping gallery at its south end. Shanghai Science Museum stop on line 2 has a large underground shopping area, known for its imitation goods. Huangpi Road South and Xujiahui stations are directly connected to shopping centers, and the Lujiazui station is connected to the Bank of China tower. *
Shenzhen Shenzhen (; ; ; ), also historically known as Sham Chun, is a major sub-provincial city and one of the special economic zones of China. The city is located on the east bank of the Pearl River estuary on the central coast of southern provi ...
has quite a few underground shopping malls: **Link City ( zh, t=連城新天地, s=连城新天地), an underground shopping plaza connecting Convention and Exhibition Center, Shopping Park,
Futian Futian District () is one of the nine districts comprising the city of Shenzhen, China. The district is home to the government and Municipal Committee of Shenzhen, as well as the city's central business district (CBD). Name There are two theori ...
and Gangxia stations with surrounding office buildings. The initial sections of the mall used to be an air-raid shelter. It is currently being expanded to Gangxia North station. **An underground electronics market connecting Huaqiang Road, Huaqiang North and Huaxin stations and the surrounding Huaqiangbei electronics markets. **Smaller networks of subterranean retail tunnels surround several Shenzhen Metro stations such as Chegongmiao, Laojie,
Science Museum A science museum is a museum devoted primarily to science. Older science museums tended to concentrate on static displays of objects related to natural history, paleontology, geology, industry and industrial machinery, etc. Modern trends in ...
,
Luohu Luohu District is a district of Shenzhen, China, located north of the New Territories of Hong Kong, east of Futian District, southeast of Longgang District, southwest of Pingshan District, and west of Yantian District. It is one of the oldest p ...
, Huangbeiling, and Window of the World. *
Wuhan Wuhan (, ; ; ) is the capital of Hubei Province in the People's Republic of China. It is the largest city in Hubei and the most populous city in Central China, with a population of over eleven million, the ninth-most populous Chinese city a ...
has a number of subterranean retail tunnels surrounding Wuhan Metro stations such as Zhongshan Park, Wuhan Business District, Wangjiawan, Qushuilou, Xudong, Wangjiadun, Hongshan Square and Changgang Road Stations.


Finland

*In
Helsinki Helsinki ( or ; ; sv, Helsingfors, ) is the Capital city, capital, primate city, primate, and List of cities and towns in Finland, most populous city of Finland. Located on the shore of the Gulf of Finland, it is the seat of the region of U ...
centre, underground shopping areas cover the central railway station area including the underground shopping centre
Asematunneli Asematunneli ( sv, Stationstunneln) is an underground shopping center connecting the Helsinki Central railway station and City-Center in downtown Helsinki, Finland. The area also has a ticket sales area for the Rautatientori metro station and c ...
, and two subway stations, Rautatientori and Kamppi. The Kamppi metro station is integrated with the Kamppi Center () long-distance bus terminal, freight depot and internal parking area, all underground. It features a six-storey shopping complex and a central bus terminal for local buses. Together with these, the Forum shopping centre,
Sokos Sokos is a chain of department stores in Finland that is part of the S Group, which also operates the hotel chain, Sokos Hotels. Department stores * Helsinki (centre) * Helsinki ( Kaari) * Hämeenlinna * Joensuu * Jyväskylä * Kajaani * Ko ...
and
Stockmann Stockmann plc is a Finnish retailer established in 1862. Stockmann's eight company-owned department stores are in Finland (six), Estonia (one), and Latvia (one). There also was an additional nine Stockmann-branded department stores in Russia o ...
department stores are all connected together with underground walkways featuring shops and other services. *Three other subway stations in Helsinki have similar, smaller undergrounds:
Hakaniemi Hakaniemi (; sv, Hagnäs) is an unofficial district of Helsinki, the Finnish capital. It covers most of the neighbourhood of Siltasaari in the district of Kallio. Hakaniemi is located at the sea shore and is separated from the city centre by th ...
, Sörnäinen and
University of Helsinki The University of Helsinki ( fi, Helsingin yliopisto, sv, Helsingfors universitet, abbreviated UH) is a public research university located in Helsinki, Finland since 1829, but founded in the city of Turku (in Swedish ''Åbo'') in 1640 as the R ...
. *The master plan of Helsinki's large underground city complex is known to be the only one of its kind in the world.


France

*
Paris Paris () is the capital and most populous city of France, with an estimated population of 2,165,423 residents in 2019 in an area of more than 105 km² (41 sq mi), making it the 30th most densely populated city in the world in 2020. Si ...
: **The mines of Paris are several disconnected networks of more than of mining tunnels started in the 13th century and dominated by the "large south network" on the Left Bank, of which was repurposed from 1786 as the Catacombs of Paris ossuary, the final resting place of 6-7 million Parisians. Other parts of the tunnel network have long been closed off for safety reasons, but the tunnels have served as safe passageways during war and revolution, routes for
urban explorer Urban exploration (often shortened as UE, urbex and sometimes known as roof and tunnel hacking) is the exploration of manmade structures, usually abandoned ruins or hidden components of the manmade environment. Photography and historical inter ...
s, and venues for unauthorized cultural activities. **
La Défense La Défense () is a major business district in France, located west of the city limits of Paris. It is part of the Paris metropolitan area in the Île-de-France region, located in the department of Hauts-de-Seine in the communes of Courbev ...
, the major business district northwest of the city center built in the 1960s, has an extensive network of commercial passageways under a vast plaza centered on the
Gare de La Défense Gare is the word for "station" in French and related languages, commonly meaning railway station Gare can refer to: People * Gare (surname), surname * The Gare Family, fictional characters in the novel '' Wild Geese'' by Martha Ostenso Places * ...
and radiating out to connect with surrounding buildings, notably the large
Les Quatre Temps The Westfield Les 4 Temps is the main shopping center in the business district of La Défense, in the western suburbs of Paris, on the territory of the commune of Puteaux in the Hauts-de-Seine. In 2019, ''Les Quatre Temps'' is the most visited sh ...
shopping center and
CNIT The Centre of New Industries and Technologies ( French: Centre des nouvelles industries et technologies, abbreviated CNIT), located in Puteaux, France, is the first building ever to be developed in La Défense, west of Paris, France. It function ...
, but enabling access to many buildings of the district. **The
Forum des Halles Les Halles (; 'The Halls') was Paris' central fresh food market. It last operated on January 12, 1973, after which it was "left to the demolition men who will knock down the last three of the eight iron-and-glass pavilions""Les Halles Dead at 200 ...
is a partially underground multilevel commercial and shopping center connected to the massive underground transit hub Chatelet-Les-Halles. Opened in 1979, passageways extend west under the Jardin Nelson Mandela for several city blocks, and within the fare zone of the Paris Metro, stretch half a kilometer south to the banks of the
River Seine ) , mouth_location = Le Havre/Honfleur , mouth_coordinates = , mouth_elevation = , progression = , river_system = Seine basin , basin_size = , tributaries_left = Yonne, Loing, Eure, Risle , tributari ...
. * Naours: below the
Picardy Picardy (; Picard and french: Picardie, , ) is a historical territory and a former administrative region of France. Since 1 January 2016, it has been part of the new region of Hauts-de-France. It is located in the northern part of France. Hist ...
village of Naours (between Doullens and Amiens), the 28 galleries ( long) of an ancient limestone quarry (exploited since the 3rd century c.e.) have long been used as shelter by the population seeking refuge from invaders. Occupied by the Triple Entente forces during WWI, and then used as headquarters by the German Army during the
WWII World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...
occupation of France, the galleries are now open to visitors. *
Arras Arras ( , ; pcd, Aro; historical nl, Atrecht ) is the prefecture of the Pas-de-Calais department, which forms part of the region of Hauts-de-France; before the reorganization of 2014 it was in Nord-Pas-de-Calais. The historic centre of ...
: During
World War I World War I (28 July 1914 11 November 1918), often abbreviated as WWI, was List of wars and anthropogenic disasters by death toll, one of the deadliest global conflicts in history. Belligerents included much of Europe, the Russian Empire, ...
, the French and British Army built a tunnel system (''boves'') based upon the already existing adits from a formerly used quarry. Scots and Englishmen used the quarry below the quarter Saint-Sauveur and called it "Glasgow", "Manchester" and "Liverpool". The
New Zealand Army , image = New Zealand Army Logo.png , image_size = 175px , caption = , start_date = , country = , branch = ...
(bonded with the British Army) used the quarry for constructing another tunnel system below the quarter Ronville and called it "Wellington", "Auckland" and "Nelson". Soldiers from these armed forces hid in the tunnels for several days. On April 9, 1917, 5:30 am, 24,000 soldiers sortied from there to encounter German troops.


Germany

*
Berlin Berlin ( , ) is the capital and largest city of Germany by both area and population. Its 3.7 million inhabitants make it the European Union's most populous city, according to population within city limits. One of Germany's sixteen constitu ...
: Several buildings on the east side of Friedrichstraße, from Quartier 205 (Friedrichstraße 70) northwards up to Galerie Lafayette are connected to each other. Businesses are on both sides of the underground street so that it appears to be inside a building all the time, even when it crosses Taubenstraße underground. :Extensive underground bunkers still exist all throughout the city centre, although they are largely sealed off and closed to the public. :All of the buildings at the large
Charité The Charité – Universitätsmedizin Berlin (Charité – Berlin University of Medicine) is one of Europe's largest university hospitals, affiliated with Humboldt University and Free University Berlin. With numerous Collaborative Research C ...
Virchow campus are connected via a system of spacious tunnels. In addition to employee use, particularly during inclement weather, there is also a rudimentary robotic system via which mail and packages are delivered across campus. *
Frankfurt am Main Frankfurt, officially Frankfurt am Main (; Hessian: , " Frank ford on the Main"), is the most populous city in the German state of Hesse. Its 791,000 inhabitants as of 2022 make it the fifth-most populous city in Germany. Located on it ...
: Underground shopping malls, called 'B-Ebene' in Frankfurt, of considerable size are found at Hauptbahnhof (central station) and Hauptwache. *
Hamburg Hamburg (, ; nds, label=Hamburg German, Low Saxon, Hamborg ), officially the Free and Hanseatic City of Hamburg (german: Freie und Hansestadt Hamburg; nds, label=Low Saxon, Friee un Hansestadt Hamborg),. is the List of cities in Germany by popul ...
: The Jungfernstieg and Rathaus subway stations and several entrances are connected by pedestrian tunnels, some of them contain shops. There is a direct access to the Europapassage shopping mall. *
Munich Munich ( ; german: München ; bar, Minga ) is the capital and most populous city of the German state of Bavaria. With a population of 1,558,395 inhabitants as of 31 July 2020, it is the third-largest city in Germany, after Berlin and ...
: Underground shopping mall at Karlsplatz/Stachus. This combines the underpass that leads to the pedestrian area and the entry to the subway system. *
Stuttgart Stuttgart (; Swabian: ; ) is the capital and largest city of the German state of Baden-Württemberg. It is located on the Neckar river in a fertile valley known as the ''Stuttgarter Kessel'' (Stuttgart Cauldron) and lies an hour from the Sw ...
: There is a large underground shopping mall (Klettpassage) connecting the Hauptbahnhof (central station) with the main shopping street, the Königstraße.


Greece

In
Thessaloniki Thessaloniki (; el, Θεσσαλονίκη, , also known as Thessalonica (), Saloniki, or Salonica (), is the second-largest city in Greece, with over one million inhabitants in its metropolitan area, and the capital of the geographic region of ...
,
Hellenistic In Classical antiquity, the Hellenistic period covers the time in Mediterranean history after Classical Greece, between the death of Alexander the Great in 323 BC and the emergence of the Roman Empire, as signified by the Battle of Actium in ...
,
Roman Roman or Romans most often refers to: * Rome, the capital city of Italy * Ancient Rome, Roman civilization from 8th century BC to 5th century AD *Roman people, the people of ancient Rome *''Epistle to the Romans'', shortened to ''Romans'', a lett ...
,
Byzantine The Byzantine Empire, also referred to as the Eastern Roman Empire or Byzantium, was the continuation of the Roman Empire primarily in its eastern provinces during Late Antiquity and the Middle Ages, when its capital city was Constantinopl ...
, and Ottoman monuments coexist underground and several of these have been discovered and emerged. Monuments such as the Catacombs of St. John and the underground museum of the
Agora The agora (; grc, ἀγορά, romanized: ', meaning "market" in Modern Greek) was a central public space in ancient Greek city-states. It is the best representation of a city-state's response to accommodate the social and political order o ...
have limited access and many are not permitted to enter even to the locals by the Archaeological Department of the Thessaloniki underground Metro project.


Hong Kong

Many
MTR The Mass Transit Railway (MTR) is a major public transport network serving :Hong Kong. Operated by the MTR Corporation Limited (MTRCL), it consists of heavy rail, light rail, and feeder bus service centred on a 10-line rapid transit network ...
stations in Hong Kong form extended underground networks connecting to
building A building, or edifice, is an enclosed structure with a roof and walls standing more or less permanently in one place, such as a house or factory (although there's also portable buildings). Buildings come in a variety of sizes, shapes, and func ...
s and at the basement of some major shopping malls in the area above. The stations themselves house a number of retail shops. Notable examples are the
Central Central is an adjective usually referring to being in the center of some place or (mathematical) object. Central may also refer to: Directions and generalised locations * Central Africa, a region in the centre of Africa continent, also known a ...
Hong Kong Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China (abbr. Hong Kong SAR or HKSAR), is a List of cities in China, city and Special administrative regions of China, special ...
stations and the
Tsim Sha Tsui Tsim Sha Tsui, often abbreviated as TST, is an urban area in southern Kowloon, Hong Kong. The area is administratively part of the Yau Tsim Mong District. Tsim Sha Tsui East is a piece of land reclaimed from the Hung Hom Bay now east of Tsi ...
East Tsim Sha Tsui Tsim Sha Tsui, often abbreviated as TST, is an urban area in southern Kowloon, Hong Kong. The area is administratively part of the Yau Tsim Mong District. Tsim Sha Tsui East is a piece of land reclaimed from the Hung Hom Bay now east of Tsim ...
stations. Only rarely are there not any shops. Additional underground networks have been proposed for
Causeway Bay Causeway Bay is an area and a bay on Hong Kong Island, Hong Kong, straddling the border of the Eastern and the Wan Chai districts. It is a major shopping, leisure and cultural centre in Hong Kong, with a number of major shopping centres. Th ...
in 2006 and in Kwun Tong under Hoi Yuen Road in 2010. , studies are underway for underground networks in
Tsim Sha Tsui Tsim Sha Tsui, often abbreviated as TST, is an urban area in southern Kowloon, Hong Kong. The area is administratively part of the Yau Tsim Mong District. Tsim Sha Tsui East is a piece of land reclaimed from the Hung Hom Bay now east of Tsi ...
, Kowloon Park, Victoria Park,
Causeway Bay Causeway Bay is an area and a bay on Hong Kong Island, Hong Kong, straddling the border of the Eastern and the Wan Chai districts. It is a major shopping, leisure and cultural centre in Hong Kong, with a number of major shopping centres. Th ...
, Happy Valley,
Admiralty Admiralty most often refers to: *Admiralty, Hong Kong *Admiralty (United Kingdom), military department in command of the Royal Navy from 1707 to 1964 *The rank of admiral *Admiralty law Admiralty can also refer to: Buildings * Admiralty, Traf ...
,
Wan Chai Wan Chai is situated at the western part of the Wan Chai District on the northern shore of Hong Kong Island, in Hong Kong. Its other boundaries are Canal Road to the east, Arsenal Street to the west and Bowen Road to the south. The area n ...
and Hong Kong Park. In 2017, The Development Bureau announced that two underground streets will be constructed, which would connect San Po Kong,
Kai Tak station Kai Tak () is an underground MTR rapid transit station located on the Tuen Ma line, in the Kai Tak Development area of Hong Kong (near the old east apron of the former Kai Tak Airport in Kowloon City District). The station was opened on 14 Feb ...
and Sung Wong Toi station.


Iran

Historical underground cities of Persia include
Samen Samen ( fa, سامن, also Romanized as Sāmen and Sāman) is a city in Hamadan Province, Iran and the capital of Samen District, in Malayer County. At the 2006 census, its population was 4,025, in 1,207 families. The local language in Samen i ...
,
Nushabad , native_name_lang = fa , settlement_type = City , image_skyline = Underground City of Nooshabad 01.jpg , imagesize = , image_alt = , image_caption = Entrance to the underground ...
, and Kariz. * Kish: An underground city by the name of Hidden Pearl was constructed of roads interlinked 20 meters (66 ft.) under the ground. Shops and restaurants are planned to be built. *
Tehran Tehran (; fa, تهران ) is the largest city in Tehran Province and the capital of Iran. With a population of around 9 million in the city and around 16 million in the larger metropolitan area of Greater Tehran, Tehran is the most popul ...
: Tehran has made a series of underground pathways in and around Vali-e Asr Metro Station and is in planning stage to increase commercial activity in newly built buildings in the central part of the city. The priorities for future development are expansion of underground connections around Haft-e Tir Metro Station and Meydan-e Vali-e Asr Metro Station. *
Isfahan Isfahan ( fa, اصفهان, Esfahân ), from its ancient designation ''Aspadana'' and, later, ''Spahan'' in middle Persian, rendered in English as ''Ispahan'', is a major city in the Greater Isfahan Region, Isfahan Province, Iran. It is lo ...
: With the completion of Imam Hosein Metro Station, and Jahan Nama Complex, and their eventual underground connection, there would be an underground complex of a length of 300 m formed in Isfahan downtown area. Also, not underground per se, with Imam Ali Square's street network being dug underground and a large open space plaza being constructed on the top, the plaza is connected through a series of covered bazaar pathways of a length exceeding 4 km, connecting it to Naqsh-e Jahan Square. *
Nushabad , native_name_lang = fa , settlement_type = City , image_skyline = Underground City of Nooshabad 01.jpg , imagesize = , image_alt = , image_caption = Entrance to the underground ...
: Nushabad has an underground city that served as a refuge during wars.


Italy

*
Ancient Rome In modern historiography, ancient Rome refers to Roman people, Roman civilisation from the founding of the city of Rome in the 8th century BC to the collapse of the Western Roman Empire in the 5th century AD. It encompasses the Roman Kingdom ...
had a network of catacombs, ancient Jewish and Christian underground burial places near the city. *
Naples Naples (; it, Napoli ; nap, Napule ), from grc, Νεάπολις, Neápolis, lit=new city. is the regional capital of Campania and the third-largest city of Italy, after Rome and Milan, with a population of 909,048 within the city's adm ...
has many chambers and tunnels beneath the city, including channels and reservoirs for water, and
catacombs Catacombs are man-made subterranean passageways for religious practice. Any chamber used as a burial place is a catacomb, although the word is most commonly associated with the Roman Empire. Etymology and history The first place to be referred ...
.


Japan

*
Osaka is a designated city in the Kansai region of Honshu in Japan. It is the capital of and most populous city in Osaka Prefecture, and the third most populous city in Japan, following Special wards of Tokyo and Yokohama. With a population of ...
has enormous underground networks in the
Umeda is a major commercial, business, shopping and entertainment district in Kita-ku, Osaka, Japan, and the city's main northern railway terminus (Ōsaka Station, Umeda Station). The district's name means "plum field". History Umeda was historical ...
, Namba, and Shinsaibashi districts, in which Umeda alone includes over 1,200 retail stores and restaurants, as well as subway and intercity rail stations. *
Tokyo Tokyo (; ja, 東京, , ), officially the Tokyo Metropolis ( ja, 東京都, label=none, ), is the capital and largest city of Japan. Formerly known as Edo, its metropolitan area () is the most populous in the world, with an estimated 37.46 ...
has numerous networks of connecting passages surrounding subway stations that span a few blocks for commuters. Stations such as
Shinjuku is a special ward in Tokyo, Japan. It is a major commercial and administrative centre, housing the northern half of the busiest railway station in the world ( Shinjuku Station) and the Tokyo Metropolitan Government Building, the administration ...
and
Shibuya Shibuya (渋谷 区 ''Shibuya-ku'') is a special ward in Tokyo, Japan. As a major commercial and finance center, it houses two of the busiest railway stations in the world, Shinjuku Station (southern half) and Shibuya Station. As of April 1 ...
have underground shopping malls.
Shinjuku is a special ward in Tokyo, Japan. It is a major commercial and administrative centre, housing the northern half of the busiest railway station in the world ( Shinjuku Station) and the Tokyo Metropolitan Government Building, the administration ...
in particular has a reputation for being so large and complex that even local Japanese get lost there. The top five largest underground "cities" (地下街, ''chikagai'') in Japan are all shopping districts: ** Crysta Nagahori in Chūō-ku, Osaka – **
Yaesu Chikagai Yaesu Chikagai or Yaesu Shopping Mall is a large underground shopping mall located in Yaesu, Chūō, Tokyo, Japan. Yaesu Chikagai lies underneath Yaesu Avenue and Sotobori Dori. It is immediately adjacent to the Yaesu side of Tokyo Station ...
in
Chūō, Tokyo is a special ward that forms part of the heart of Tokyo, Japan. The ward refers to itself in English as Chūō City. It was formed in 1947 as a merger of Kyobashi and Nihonbashi wards following Tokyo City's transformation into Tokyo Metrop ...
– ** Kawasaki Azalea in Kawasaki-ku, Kawasaki – ** Central Park Chikagai in
Naka-ku, Nagoya is one of the 16 wards of the city of Nagoya in Aichi Prefecture, Japan. As of 1 October 2019, the ward has an estimated population of 90,918 and a population density of 9,693 persons per km2. The total area is 9.38 km2. Geography Naka Wa ...
– **Diamor Osaka in Kita-ku, Osaka


Jordan

Jordan Jordan ( ar, الأردن; tr. ' ), officially the Hashemite Kingdom of Jordan,; tr. ' is a country in Western Asia. It is situated at the crossroads of Asia, Africa, and Europe, within the Levant region, on the East Bank of the Jordan Rive ...
boasts the city of Petra—"rose-red city, half as old as time"—carved from the living rock.


Mexico

Guanajuato Guanajuato (), officially the Free and Sovereign State of Guanajuato ( es, Estado Libre y Soberano de Guanajuato), is one of the 32 states that make up the Federal Entities of Mexico. It is divided into 46 municipalities and its capital city i ...
city was built over old silver mines, some of which are used as roads. The
Mexico DF Mexico City ( es, link=no, Ciudad de México, ; abbr.: CDMX; Nahuatl: ''Altepetl Mexico'') is the capital city, capital and primate city, largest city of Mexico, and the List of North American cities by population, most populous city in North Amer ...
metro system has many underground pedestrian walkways connecting stations.


Netherlands

In general, many large railway stations house underground hallways featuring shops, restaurants, banks and money exchange offices. A striking example of such stations would be the main hallway of the Amsterdam central station, which connects to the city's metro system, although due to renovation and re-building it was temporarily (2012–2015) not possible to walk from the subway to the train station without going outside. *
Maastricht Maastricht ( , , ; li, Mestreech ; french: Maestricht ; es, Mastrique ) is a city and a municipality in the southeastern Netherlands. It is the capital and largest city of the province of Limburg. Maastricht is located on both sides of the ...
: Originally a
casemate A casemate is a fortified gun emplacement or armored structure from which guns are fired, in a fortification, warship, or armoured fighting vehicle.Webster's New Collegiate Dictionary When referring to antiquity, the term "casemate wall" me ...
, the ''kazematten'' of Maastricht form a long network of tunnels underneath the western part of the city. This tunnel network has mainly been used for military purposes. The main construction period of these tunnels lasted from 1575 to 1825. The newest sections of the tunnel network were dug as late as the middle 20th century, built in the
Cold War The Cold War is a term commonly used to refer to a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc. The term '' cold war'' is used because t ...
as a shelter for citizens in the event of a nuclear strike on the city. * Caves of Maastricht are a far more extensive, system of tunnels with a length over and 20,000 individual corridors lies just west of Maastricht; ( nl, Grotten van Maastricht). These man-made 'caves' were used as Marl quarries from the 13th century onwards. In
World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the World War II by country, vast majority of the world's countries—including all of the great power ...
, these caves were used to hide large quantities of paintings from the Germans, even including the Nachtwacht. In 1944, construction started on a large public shelter that could have housed 45,000 persons in these caves. The project never saw its completion due to the liberation of Maastricht in the fall of the same year.


Poland

*
Warsaw Warsaw ( pl, Warszawa, ), officially the Capital City of Warsaw,, abbreviation: ''m.st. Warszawa'' is the capital and largest city of Poland. The metropolis stands on the River Vistula in east-central Poland, and its population is officiall ...
:
Warszawa Centralna railway station Warszawa Centralna, in English known as Warsaw Central Station, is the primary railway station in Warsaw, Poland. Completed in 1975, the station is located on the Warsaw Cross-City Line and features four underground island platforms with eight tr ...
is connected by
pedestrian tunnels An underground city is a series of linked subterranean spaces that may provide a defensive refuge; a place for living, working or shopping; a transit system; mausolea; wine or storage cellars; cisterns or drainage channels; or several of the ...
to adjacent rail stations
Warszawa Śródmieście Warsaw ( pl, Warszawa, ), officially the Capital City of Warsaw,, abbreviation: ''m.st. Warszawa'' is the capital and largest city of Poland. The metropolis stands on the River Vistula in east-central Poland, and its population is officiall ...
and Warszawa WKD,
Złote Tarasy The Złote Tarasy (''Golden Terraces'') is a commercial, office, and entertainment complex in the center of Warsaw, Poland, located next to the Warszawa Centralna railway station between the Jana Pawła II and Emilii Plater streets. It opened ...
shopping center, and the Centrum LIM skyscraper.


Russia

*
Moscow Moscow ( , US chiefly ; rus, links=no, Москва, r=Moskva, p=mɐskˈva, a=Москва.ogg) is the capital and largest city of Russia. The city stands on the Moskva River in Central Russia, with a population estimated at 13.0 million ...
: "Okhotnyi Ryad" (Охотный Ряд) four-level underground shopping mall () linked to Metro station of same name. *
Moscow Metro 2 Metro-2 () is the informal name for a purported secret underground metro system which parallels the public Moscow Metro (known as Metro-1 when in comparison with Metro-2). The system was supposedly built, or at least started, during the time of ...
is a purported secret underground metro system in
Moscow Moscow ( , US chiefly ; rus, links=no, Москва, r=Moskva, p=mɐskˈva, a=Москва.ogg) is the capital and largest city of Russia. The city stands on the Moskva River in Central Russia, with a population estimated at 13.0 million ...
built supposedly during (or from) the time of
Joseph Stalin Joseph Vissarionovich Stalin (born Ioseb Besarionis dze Jughashvili; – 5 March 1953) was a Georgian revolutionary and Soviet Union, Soviet political leader who led the Soviet Union from 1924 until his death in 1953. He held power as Ge ...
.


Singapore

*Extensive underground networks exist around most major stations of the Mass Rapid Transit, such as the one at the Raffles Place MRT station with direct underground connections to 19 buildings in the busy Raffles Place area. Expanding the network is the first phase of a new subterranean network linking the station to the One Raffles Quay and Marina Bay Financial Centre for a complex underground pedestrian network across the entire downtown area. *The CityLink Mall offers over of underground retail space and connects the
City Hall MRT station City Hall MRT station is an underground Mass Rapid Transit (MRT) interchange station on the North South Line (NSL) and East West Line (EWL). Situated in the Downtown Core district of Singapore, it is underneath Stamford Road near the road ...
with Suntec City, the Esplanade - Theatres on the Bay, and other developments in the Marina Centre area. It is also linked to the Esplanade MRT station on the
Circle MRT line The Circle MRT Line (CCL) is a medium-capacity Mass Rapid Transit line in Singapore operated by SMRT Corporation. It runs in a currently incomplete loop from Dhoby Ghaut station in the city area of Singapore to HarbourFront station in the ...
. *The
Orchard Road Orchard Road, often known colloquially as simply Orchard, is a major –long road in the Central Area of Singapore. Known as a famous tourist attraction, it is an upscale shopping area of Singapore, with numerous internationally renowned depa ...
shopping belt is connected by underground linkways often with commercial space, particularly around the three MRT stations serving the district, namely
Orchard An orchard is an intentional plantation of trees or shrubs that is maintained for food production. Orchards comprise fruit- or nut-producing trees which are generally grown for commercial production. Orchards are also sometimes a feature of ...
,
Somerset ( en, All The People of Somerset) , locator_map = , coordinates = , region = South West England , established_date = Ancient , established_by = , preceded_by = , origin = , lord_lieutenant_office =Lord Lieutenant of Somerset , lor ...
and Dhoby Ghaut. Plans are also in place to link towards Bras Basah Road into Suntec City,
Bugis Junction Bugis Junction, formerly known as Parco Bugis Junction is an integrated development located at Victoria Street, Middle Road and North Bridge Road in Bugis, Downtown Core in Singapore. The development consists of a shopping mall, an office tow ...
and Chinatown.


South Korea

*Seoul has a well-developed underground network. Myeongdong and Hoehyeon underground streets are the most famous; they are connected to
Hoehyeon Station Hoehyeon Station is a station on the Seoul Subway Line 4. It is the closest station to the historical gate of Namdaemun, and also serves the major shopping district of Namdaemun Market. This station is located in Namchang-dong, Jung-gu, Seoul. S ...
and Myeongdong Station *It is planned to build a larger underground city in Gangnamdaero, the border between Gangnam District and Seocho District.


Spain

*In
Barcelona Barcelona ( , , ) is a city on the coast of northeastern Spain. It is the capital and largest city of the autonomous community of Catalonia, as well as the second most populous municipality of Spain. With a population of 1.6 million within c ...
, there is an abandoned underground mall near Plaça de Catalunya called
Avinguda de la Llum Avinguda de la Llum ( Catalan for ''Avenue of Light''; Spanish: Avenida de la Luz) is a now-closed underground mall in Barcelona, the first one of its kind to open in Europe, open between 1940 and 1990, on a 2000 square-metre site built in 1929 a ...
, closed since 1990, which had originally been part of a more ambitious project to build an underground city under the centre of Barcelona. Also, some Metro stations or connecting lines in the same station are connected by underground passages over a block in length. *Legend has that the many caves and tunnels in Subterranean Toledo under the old part of Toledo were connected and were used by occultists.


Sweden

*By walking through
Stockholm Stockholm () is the capital and largest city of Sweden as well as the largest urban area in Scandinavia. Approximately 980,000 people live in the municipality, with 1.6 million in the urban area, and 2.4 million in the metropo ...
subway stations and indoor shopping malls it is possible to walk indoor through the central business district, partly underground, from Arsenalsgatan subway entrance (Kungsträdgården station) to Kungsbron (north entrance to Cityterminalen bus terminal), covering a distance of between 1 and 2 kilometres.


Switzerland

*
Geneva Geneva ( ; french: Genève ) frp, Genèva ; german: link=no, Genf ; it, Ginevra ; rm, Genevra is the second-most populous city in Switzerland (after Zürich) and the most populous city of Romandy, the French-speaking part of Switzerland. Situa ...
contains a large underground shopping centre which also acts to connect separate sections of surface shops. * St. Gallen's main
hospital A hospital is a health care institution providing patient treatment with specialized health science and auxiliary healthcare staff and medical equipment. The best-known type of hospital is the general hospital, which typically has an emergen ...
uses several tunnels to connect its buildings, helicopter pad, pharmacies and storage facilities. * Zürich Hauptbahnhof in
Zürich , neighboring_municipalities = Adliswil, Dübendorf, Fällanden, Kilchberg, Maur, Oberengstringen, Opfikon, Regensdorf, Rümlang, Schlieren, Stallikon, Uitikon, Urdorf, Wallisellen, Zollikon , twintowns = Kunming, San Francisco Z ...
has an underground RailCity
shopping mall A shopping mall (or simply mall) is a North American term for a large indoor shopping center, usually Anchor tenant, anchored by department stores. The term "mall" originally meant pedestrian zone, a pedestrian promenade with shops along it (that ...
with full access to the station platforms.


Taiwan

Taipei Taipei (), officially Taipei City, is the capital and a special municipality of the Republic of China (Taiwan). Located in Northern Taiwan, Taipei City is an enclave of the municipality of New Taipei City that sits about southwest of the ...
has underground streets connecting two or more metro stations. In addition, there is a large underground shopping mall near the main train station. *Underground streets around
Taipei Station Taipei Main Station () is a railway and metro station in Taipei, Taiwan. It is served by Taiwan High Speed Rail, the Taiwan Railways Administration, and the Taipei Metro. It is also connected through underground passageways to the terminal sta ...
:
Taipei City Mall Taipei City Mall () is a shopping center located at the intersection of the Datong and Zhongzheng districts in Taipei, Taiwan. It is the first underground market in Taipei City. It is located under Civic Boulevard (市民大道 ''Shìmín Dàdào ...
,
Eslite Eslite Bookstore () is one of the largest retail bookstore chains in Taiwan. It also offers one of the largest selections of English-language publications and translation materials in Taiwan. Its headquarters is in Xinyi District, Taipei. Br ...
underground malls,
Zhongshan Metro Mall The Zhongshan Metro Shopping Mall () is an extensive underground shopping mall in Zhongshan District and Datong District, Taipei, Taiwan. It is located at Changan West Rd., No. 52-1. The mall stretches from Taipei Main Station in the south to S ...
, etc. *
East Metro Mall East Metro Mall () is a shopping center located in Da'an District, Taipei, Taiwan. It is the first underground mall in the Eastern District of Taipei, connecting Zhongxiao Dunhua metro station and Zhongxiao Fuxing metro station. History * Eas ...
, site between Zhongxiao Fuxing and Zhongxiao Dunhua metro stations.


Turkey

*
Cappadocia Cappadocia or Capadocia (; tr, Kapadokya), is a historical region in Central Anatolia, Turkey. It largely is in the provinces Nevşehir, Kayseri, Aksaray, Kırşehir, Sivas and Niğde. According to Herodotus, in the time of the Ionian Revo ...
contains several historical underground cities carved out of unusual geological formations formed via the eruptions of ancient volcanoes. The cities were initially inhabited by the
Hittites The Hittites () were an Anatolian people who played an important role in establishing first a kingdom in Kussara (before 1750 BC), then the Kanesh or Nesha kingdom (c. 1750–1650 BC), and next an empire centered on Hattusa in north-cent ...
, then later by early
Christians Christians () are people who follow or adhere to Christianity, a monotheistic Abrahamic religion based on the life and teachings of Jesus Christ. The words ''Christ'' and ''Christian'' derive from the Koine Greek title ''Christós'' (Χρ� ...
as hiding places. They are now archeological and tourist sites but are not generally occupied (see Kaymakli Underground City, Derinkuyu underground city, Özkonak Underground City, Mazı Underground City). The latest large underground city was discovered in 2007 in Gaziemir, Güzelyurt. It was a stopover on the Silk Road, allowing travelers and their camels to rest in safety underground, in a 'fortress' equivalent to a modern hotel. *
Istanbul ) , postal_code_type = Postal code , postal_code = 34000 to 34990 , area_code = +90 212 (European side) +90 216 (Asian side) , registration_plate = 34 , blank_name_sec2 = GeoTLD , blank_i ...
boasts the Roman cisterns, built 2,000 years ago for water storage it is now a tourist attraction.


Ukraine

*
Kyiv Kyiv, also spelled Kiev, is the capital and most populous city of Ukraine. It is in north-central Ukraine along the Dnieper River. As of 1 January 2021, its population was 2,962,180, making Kyiv the seventh-most populous city in Europe. Ky ...
: An underground concourse extends underneath Khreschatyk Street from Maidan Nezalezhnosti to Ploscha L'va Tolstoho. The concourse connects to the Kyiv Metro and to the Globe shopping mall beneath Maidan Nezalezhnosti. *
Odessa Odesa (also spelled Odessa) is the third most populous city and municipality in Ukraine and a major seaport and transport hub located in the south-west of the country, on the northwestern shore of the Black Sea. The city is also the administrativ ...
: A ramified tunnel network made from the former quarries that is famous as Odessa Catacombs covers the historical center of Odessa and some suburban areas.


United Kingdom

* Corsham,
Wiltshire Wiltshire (; abbreviated Wilts) is a historic and ceremonial county in South West England with an area of . It is landlocked and borders the counties of Dorset to the southwest, Somerset to the west, Hampshire to the southeast, Gloucestershire ...
, is the location of the
Central Government War Headquarters The Central Government War Headquarters (CGWHQ) is a complex built underground as the United Kingdom's emergency government war headquarters – the hub of the country's alternative seat of power outside London during a nuclear war or conflict ...
, code name 'Burlington'. Built in the late 1950s in response to the increasing threat of nuclear warfare during the
Cold War The Cold War is a term commonly used to refer to a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc. The term '' cold war'' is used because t ...
, the subterranean site was designed to be the main emergency government war headquarters of the UK outside London and safely house up to 4,000 central government personnel in the event of a nuclear strike. *In
London London is the capital and List of urban areas in the United Kingdom, largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary dow ...
's redeveloped docklands
Canary Wharf tube station Canary Wharf is a London Underground station at Canary Wharf and is on the Jubilee line, between and stations. The station is located in Travelcard Zone 2 and was opened on 17 September 1999 as part of the Jubilee Line Extension. Over 40& ...
, adjacent office towers and shopping malls are connected underground. It is also possible to access two stations of the Docklands Light Railway without going outside. *
Dover Dover () is a town and major ferry port in Kent, South East England. It faces France across the Strait of Dover, the narrowest part of the English Channel at from Cap Gris Nez in France. It lies south-east of Canterbury and east of Maids ...
contains a series of interconnecting tunnels, that honeycomb both sides of the Dover Valley, carved into the chalk cliffs. These date from Ancient times at
Dover Castle Dover Castle is a medieval castle in Dover, Kent, England and is Grade I listed. It was founded in the 11th century and has been described as the "Key to England" due to its defensive significance throughout history. Some sources say it is th ...
through to Napoleonic, Second and Cold War installations. The Dover Castle complex is the larger, going at least six levels deep and includes a hospital, troops quarters, offices and storage and channel view points. The southern tunnels are mixed between Napoleonic War-era defences (see
Dover Western Heights The Western Heights of Dover are one of the most impressive fortifications in Britain. They comprise a series of forts, strong points and ditches, designed to protect the country from invasion. They were created in the 18th and 19th centuries to ...
) and Second World War-era defences, with some seafront air raid shelters still used for shop storage today. Many have fallen into disrepair and are now closed to the public, but many are still open. *
London London is the capital and List of urban areas in the United Kingdom, largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary dow ...
: There are extensive rooms, tunnels and chambers known as Churchill War Rooms or Admiralty Citadel beneath
Whitehall Whitehall is a road and area in the City of Westminster, Central London. The road forms the first part of the A3212 road from Trafalgar Square to Chelsea. It is the main thoroughfare running south from Trafalgar Square towards Parliament Sq ...
, created during World War II, and used by
Winston Churchill Sir Winston Leonard Spencer Churchill (30 November 187424 January 1965) was a British statesman, soldier, and writer who served as Prime Minister of the United Kingdom twice, from 1940 to 1945 during the Second World War, and again from ...
. *There are extensive underground constructions across Britain, such as
Chislehurst Caves Chislehurst Caves are a series of intersecting man-made tunnels and caverns covering some 22 miles (35.4 km) in Chislehurst in southeast London, England. From the mid-13th to early 19th centuries the 'caves' were created from the mining of f ...
, built or repurposed as air-raid shelters during World War II. *
Edinburgh Edinburgh ( ; gd, Dùn Èideann ) is the capital city of Scotland and one of its 32 Council areas of Scotland, council areas. Historically part of the county of Midlothian (interchangeably Edinburghshire before 1921), it is located in Lothian ...
's old town has extensive rooms, tunnels and chambers beneath some areas; of particular note are the
Edinburgh Vaults The Edinburgh Vaults or South Bridge Vaults are a series of chambers formed in the nineteen arches of the South Bridge in Edinburgh, Scotland, was part of the South Bridge Act 1785 and was completed in 1788. For around 30 years, the vaults we ...
, where overcrowding led people to construct elaborately interconnected buildings in the vaults of the city's South Bridge. *In Southport, Merseyside, Nevill Street has the remainders of an underground shopping street, which can now only be accessed from the cellars of buildings on the current street, which was raised by one storey from the original level. One end of the underground street ended at the Marine Lake, close to the pier entrance. *In
Liverpool Liverpool is a City status in the United Kingdom, city and metropolitan borough in Merseyside, England. With a population of in 2019, it is the List of English districts by population, 10th largest English district by population and its E ...
, the Williamson's tunnels included the site of an 'underground house' complete with windows (concealed by work for public opening) and an extant and partially excavated 'banqueting hall'. *
Nottingham Nottingham ( , locally ) is a city and unitary authority area in Nottinghamshire, East Midlands, England. It is located north-west of London, south-east of Sheffield and north-east of Birmingham. Nottingham has links to the legend of Robi ...
has an extensive network of man-made caves, dating back to the
Early Middle Ages The Early Middle Ages (or early medieval period), sometimes controversially referred to as the Dark Ages, is typically regarded by historians as lasting from the late 5th or early 6th century to the 10th century. They marked the start of the Mi ...
.


United States

* Albany, New York: The Empire State Plaza features an underground city which contains banks, a
YMCA YMCA, sometimes regionally called the Y, is a worldwide youth organization based in Geneva, Switzerland, with more than 64 million beneficiaries in 120 countries. It was founded on 6 June 1844 by George Williams in London, originally ...
, restaurants, several food courts, retailers, a police station, a bus station, and a Visitor's Center. The Plaza connects several government buildings to the Egg (a state-owned theater), the New York State Museum, the New York State Library, the Corning Tower, legislative offices, judicial offices, and the
Times Union Center The MVP Arena (originally Knickerbocker Arena, and then the Pepsi Arena and Times Union Center) is an indoor arena located in Albany, New York. It is configurable and can accommodate from 6,000 to 17,500 people, with a maximum seating capacit ...
. The Empire State Plaza Art Collection consists of 92 large-scale
painting Painting is the practice of applying paint, pigment, color or other medium to a solid surface (called the "matrix" or "support"). The medium is commonly applied to the base with a brush, but other implements, such as knives, sponges, and a ...
s,
sculpture Sculpture is the branch of the visual arts that operates in three dimensions. Sculpture is the three-dimensional art work which is physically presented in the dimensions of height, width and depth. It is one of the plastic arts. Durable ...
s, and tapestries at various locations along the main corridor, and features works from the New York School of abstract modern art from the 1960s and 1970s. *
Atlanta Atlanta ( ) is the capital and most populous city of the U.S. state of Georgia. It is the seat of Fulton County, the most populous county in Georgia, but its territory falls in both Fulton and DeKalb counties. With a population of 498,7 ...
, Georgia: The "Underground" represents the original surface level of downtown Atlanta; the present streets are raised roadways ( viaducts) built in the 1920s. The shopping center Underground Atlanta, taking advantage of the former street-level storefronts, covers six city blocks and includes retail shopping and restaurants. It was begun in 1968 and re-opened in 1989 after a financially forced closure. * Boise,
Idaho Idaho ( ) is a U.S. state, state in the Pacific Northwest region of the Western United States. To the north, it shares a small portion of the Canada–United States border with the province of British Columbia. It borders the states of Monta ...
: The downtown sector's Capitol Mall Complex consists of a large system of networked tunnels that connect all the state buildings. The tunnels have walkways and vehicle passageways. The underground area boasts a geothermal power plant, a banking system, extensive dining areas, parking, a dedicated mail room for the Capitol Mall Complex and a fallout shelter. The main hall is decorated with art from local artists that was collected over a thirty-year time frame. This collection is not often seen by the public as access is limited. Recent remodeling of the Idaho State Capitol Building has added new underground wings that are linked to the Capitol Mall. These new wings have offices, meeting rooms, and records storage areas and were designed to support the Idaho legislature when it is in session. *
Boston Boston (), officially the City of Boston, is the state capital and most populous city of the Commonwealth of Massachusetts, as well as the cultural and financial center of the New England region of the United States. It is the 24th- mo ...
,
Massachusetts Massachusetts (Massachusett: ''Muhsachuweesut Massachusett_writing_systems.html" ;"title="nowiki/> məhswatʃəwiːsət.html" ;"title="Massachusett writing systems">məhswatʃəwiːsət">Massachusett writing systems">məhswatʃəwiːsət'' En ...
:
Northeastern University Northeastern University (NU) is a private research university with its main campus in Boston. Established in 1898, the university offers undergraduate and graduate programs on its main campus as well as satellite campuses in Charlotte, North Ca ...
has a tunnel network linking thirteen buildings in the center of campus. *
Cambridge, Massachusetts Cambridge ( ) is a city in Middlesex County, Massachusetts, United States. As part of the Boston metropolitan area, the cities population of the 2020 U.S. census was 118,403, making it the fourth most populous city in the state, behind Boston, ...
: Many of the older buildings of the
Massachusetts Institute of Technology The Massachusetts Institute of Technology (MIT) is a private land-grant research university in Cambridge, Massachusetts. Established in 1861, MIT has played a key role in the development of modern technology and science, and is one of th ...
between Massachusetts Avenue and Ames Street are linked together by underground utility tunnels. *
Chicago (''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = List of sovereign states, Count ...
,
Illinois Illinois ( ) is a state in the Midwestern United States. Its largest metropolitan areas include the Chicago metropolitan area, and the Metro East section, of Greater St. Louis. Other smaller metropolitan areas include, Peoria and Rock ...
: The
Chicago Pedway The Chicago Pedway is a network of tunnels, ground-level concourses and bridges connecting skyscrapers, retail stores, hotels, and train stations throughout the central business district of Chicago, Illinois. With a length of more than 40 do ...
consists of approximately 4 disjointed tunnel systems, the largest covering about 10 blocks, connecting such buildings and transit stations as
Metra Metra is the commuter rail system in the Chicago metropolitan area serving the city of Chicago and its surrounding suburbs via the Union Pacific Railroad, BNSF Railway, and other railroads. The system operates 242 stations on 11 rail lines ...
's
Millennium Station Millennium Station (formerly Randolph Street Terminal; sometimes called Randolph Street station or Randolph/South Water Street station) is a major commuter rail terminal in the Loop (downtown), Chicago. It is the northern terminus of the Metr ...
, the Chicago Cultural Center, the
Macy's Macy's (originally R. H. Macy & Co.) is an American chain of high-end department stores founded in 1858 by Rowland Hussey Macy. It became a division of the Cincinnati-based Federated Department Stores in 1994, through which it is affiliated wi ...
(former Marshall Field's) store at State and Randolph, Chicago Transit Authority's State Street and Dearborn Street subway stations, City Hall, and the James R. Thompson Center, along with few residential buildings including Aqua, Columbus Plaza, The Heritage at Millennium Park, the Park Millennium and 200 North Dearborn Apartments. *
Cleveland Cleveland ( ), officially the City of Cleveland, is a city in the United States, U.S. U.S. state, state of Ohio and the county seat of Cuyahoga County, Ohio, Cuyahoga County. Located in the northeastern part of the state, it is situated along ...
,
Ohio Ohio () is a U.S. state, state in the Midwestern United States, Midwestern region of the United States. Of the List of states and territories of the United States, fifty U.S. states, it is the List of U.S. states and territories by area, 34th-l ...
: The Tower City Center, on the public square at the center of downtown Cleveland, houses a shopping mall with a food court, two hotels, and the Tower City Rapid Transit Station, the central station on RTA's Red, Green, and Blue Lines. The building connects to several office buildings, and also has an enclosed skyway to the
Gateway Sports and Entertainment Complex 200px, Logo for the Gateway Sports Complex The Gateway Sports and Entertainment Complex is an entertainment complex located in downtown Cleveland, Ohio. It opened in 1994 and is owned by the city of Cleveland and Cuyahoga County and is managed b ...
. * Crystal City,
Virginia Virginia, officially the Commonwealth of Virginia, is a state in the Mid-Atlantic and Southeastern regions of the United States, between the Atlantic Coast and the Appalachian Mountains. The geography and climate of the Commonwealth are ...
: A residential and commercial area of
Arlington County, Virginia Arlington County is a county in the Commonwealth of Virginia. The county is situated in Northern Virginia on the southwestern bank of the Potomac River directly across from the District of Columbia, of which it was once a part. The county ...
next to the Ronald Reagan Washington National Airport, Crystal City features an extensive underground city connecting its hotels, office buildings, and apartment towers and is lined with 173 shops, restaurants, banks, medical, and other services. *
Dallas Dallas () is the third largest city in Texas and the largest city in the Dallas–Fort Worth metroplex, the fourth-largest metropolitan area in the United States at 7.5 million people. It is the largest city in and seat of Dallas County ...
,
Texas Texas (, ; Spanish: ''Texas'', ''Tejas'') is a state in the South Central region of the United States. At 268,596 square miles (695,662 km2), and with more than 29.1 million residents in 2020, it is the second-largest U.S. state by ...
: The Dallas Pedestrian Network has a network of tunnels connecting buildings in the downtown area. *
Dayton Dayton () is the sixth-largest city in the U.S. state of Ohio and the county seat of Montgomery County. A small part of the city extends into Greene County. The 2020 U.S. census estimate put the city population at 137,644, while Greater Da ...
, Ohio: The academic section of Wright State University's campus contains nearly two miles (3.18 kilometers) of tunnels that link 20 of the 22 buildings. The tunnels were designed to connect the campus without imprinting the surrounding land. *
Detroit, Michigan Detroit ( , ; , ) is the largest city in the U.S. state of Michigan. It is also the largest U.S. city on the United States–Canada border, and the seat of government of Wayne County. The City of Detroit had a population of 639,111 at ...
: The Fisher Building, located in
New Center New Center is a commercial and residential historic district located uptown in Detroit, Michigan, adjacent to Midtown, one mile (1.6 km) north of the Cultural Center, and approximately three miles (5 km) north of Downtown. The area ...
, features an underground concourse which connects with the Albert Kahn Building, New Center One, and
Cadillac Place Cadillac Place, formerly the General Motors Building, is a landmark high-rise office complex located at 3044 West Grand Boulevard in the New Center area of Detroit, Michigan. It was renamed for the French founder of Detroit, Antoine Laumet de ...
(formerly the General Motors Building) via a series of skyways and tunnels. * Duluth,
Minnesota Minnesota () is a state in the upper midwestern region of the United States. It is the 12th largest U.S. state in area and the 22nd most populous, with over 5.75 million residents. Minnesota is home to western prairies, now given over t ...
: The city's downtown sector has an extensive network of skyways and tunnels connecting its buildings, including the Federal Courthouse and Convention Center (DECC). * Havre,
Montana Montana () is a state in the Mountain West division of the Western United States. It is bordered by Idaho to the west, North Dakota and South Dakota to the east, Wyoming to the south, and the Canadian provinces of Alberta, British Columb ...
: The city has an underground area, called "Havre Beneath the Streets", that operates as a tourist attraction. *
Houston Houston (; ) is the most populous city in Texas, the most populous city in the Southern United States, the fourth-most populous city in the United States, and the sixth-most populous city in North America, with a population of 2,304,580 ...
, Texas: The seven-mile (11 km) Houston tunnel system is set about twenty feet below Houston's downtown street system and is composed of underground passageways which, with above-ground skywalks, link office towers to hotels, banks, corporate and government offices, restaurants, retail stores, and the Houston Theater District. Only one building, Wells Fargo Plaza, offers direct access from the street to the Tunnel; otherwise, the Tunnel can only be entered via street-level stairs, escalators, or elevators inside a building connected to it. * Irvine, California: A network of large tunnels running beneath the
University of California, Irvine The University of California, Irvine (UCI or UC Irvine) is a public land-grant research university in Irvine, California. One of the ten campuses of the University of California system, UCI offers 87 undergraduate degrees and 129 graduate and p ...
connects many of the campus' major buildings to a central utility plant. These tunnels are only accessible to maintenance staff, although there are also publicly accessible tunnels which intersect the utility tunnels, such as the one that goes between the main Information & Computer Science building and the Engineering Tower. *
Kansas City The Kansas City metropolitan area is a bi-state metropolitan area anchored by Kansas City, Missouri. Its 14 counties straddle the border between the U.S. states of Missouri (9 counties) and Kansas (5 counties). With and a population of more th ...
,
Missouri Missouri is a state in the Midwestern region of the United States. Ranking 21st in land area, it is bordered by eight states (tied for the most with Tennessee): Iowa to the north, Illinois, Kentucky and Tennessee to the east, Arkansas t ...
: The city's
SubTropolis SubTropolis is a , artificial cave in the bluffs above the Missouri River in Kansas City, Missouri, United States, that is claimed to be the world's largest underground storage facility. Developed by late Kansas City Chiefs owner Lamar Hunt ...
is a 55,000,000 square foot (5,060,000 m³), 1,100-acre (4.5 km²) underground business complex running along the Missouri River. The space was originally part of the Bethany Falls limestone mine, and was later repurposed for use as a commercial underground storage facility. *
Minneapolis Minneapolis () is the largest city in Minnesota, United States, and the county seat of Hennepin County. The city is abundant in water, with thirteen lakes, wetlands, the Mississippi River, creeks and waterfalls. Minneapolis has its origin ...
and
Saint Paul Paul; grc, Παῦλος, translit=Paulos; cop, ⲡⲁⲩⲗⲟⲥ; hbo, פאולוס השליח (previously called Saul of Tarsus;; ar, بولس الطرسوسي; grc, Σαῦλος Ταρσεύς, Saũlos Tarseús; tr, Tarsuslu Pavlus; ...
, Minnesota: There are three major systems consisting mostly of above-ground skyways in the Twin Cities. The Minneapolis Skyway System covers approximately 11 miles with 62 skyways. St. Paul's skyway system connects buildings in a 30-block radius in the downtown core. On the
University of Minnesota The University of Minnesota, formally the University of Minnesota, Twin Cities, (UMN Twin Cities, the U of M, or Minnesota) is a public land-grant research university in the Twin Cities of Minneapolis and Saint Paul, Minnesota, United States. ...
Minneapolis and St Paul campuses, the Gopher Way connects most buildings and parking structures together using a number of skyway links and tunnels. A system of tunnels connects state office buildings around the Minnesota State Capitol. A series of tunnels also connect the Hennepin County Government Center, Minneapolis City Hall, and the
United States District Court for the District of Minnesota The United States District Court for the District of Minnesota (in case citations, D. Minn.) is the United States district court, federal district court whose jurisdiction is the state of Minnesota. Its two primary courthouses are in Minneapoli ...
. *
New York City New York, often called New York City or NYC, is the List of United States cities by population, most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the L ...
, New York: Several
New York City Subway The New York City Subway is a rapid transit system owned by the government of New York City and leased to the New York City Transit Authority, an affiliate agency of the state-run Metropolitan Transportation Authority (MTA). Opened on October ...
stations have direct access to one or more buildings. Additionally, most of the lower floor of the Rockefeller Center qualifies as an underground city, as it features connections to subways, an extensive underground concourse, building connections, and several restaurants, all below ground. The area around
Times Square Times Square is a major commercial intersection, tourist destination, entertainment hub, and neighborhood in Midtown Manhattan, New York City. It is formed by the junction of Broadway, Seventh Avenue, and 42nd Street. Together with adjacent ...
and the
Port Authority Bus Terminal The Port Authority Bus Terminal (colloquially known as the Port Authority and by its acronym PABT) is a bus terminal located in Manhattan in New York City. It is the busiest bus terminal in the world by volume of traffic, serving about 8,000 bus ...
forms an underground network several blocks in size; much of it is within the Subway's fare control. A series of tunnels connect Brookfield Place (New York City) through the World Trade Center's lower levels, to the Fulton Center, forming an underground city with several subway stations and many shops and restaurants. *
Oklahoma City Oklahoma City (), officially the City of Oklahoma City, and often shortened to OKC, is the capital and largest city of the U.S. state of Oklahoma. The county seat of Oklahoma County, it ranks 20th among United States cities in population, and ...
,
Oklahoma Oklahoma (; Choctaw: ; chr, ᎣᎧᎳᎰᎹ, ''Okalahoma'' ) is a state in the South Central region of the United States, bordered by Texas on the south and west, Kansas on the north, Missouri on the northeast, Arkansas on the east, New ...
: The
Oklahoma City Underground The Oklahoma City Underground is a series of pedestrian tunnels and skyways connecting skyscrapers, hotels and venues in sections of Downtown Oklahoma City's central business district. History The original tunnel was dug in the early 1930s becaus ...
(formerly the Oklahoma City Conncourse) is a tunnel system connecting nearly all of the downtown buildings in a 20-square-block area. It is one of the most extensive all-enclosed pedestrian systems in the U.S., extending three-quarters of a mile and connecting over 30 downtown buildings via tunnels or skyways. The original tunnel link was built in 1931 and the system was extended in the 1970s. It underwent a $2 million renovation in 2006–2007, after which the Conncourse was renamed the Underground. *
Philadelphia Philadelphia, often called Philly, is the largest city in the Commonwealth of Pennsylvania, the sixth-largest city in the U.S., the second-largest city in both the Northeast megalopolis and Mid-Atlantic regions after New York City. Since ...
,
Pennsylvania Pennsylvania (; ( Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...
: Center City has several miles of interconnected underground concourses under Market, Broad, and Locust Streets, and JFK Boulevard. The system includes nine
rapid transit Rapid transit or mass rapid transit (MRT), also known as heavy rail or metro, is a type of high-capacity public transport generally found in urban areas. A rapid transit system that primarily or traditionally runs below the surface may be ...
and
regional rail Regional rail, also known as local trains and stopping trains, are passenger rail services that operate between towns and cities. These trains operate with more stops over shorter distances than inter-city rail, but fewer stops and faster serv ...
stations served by 23
SEPTA The Southeastern Pennsylvania Transportation Authority (SEPTA) is a regional public transportation authority that operates bus, rapid transit, commuter rail, light rail, and electric trolleybus services for nearly 4 million people in five c ...
and PATCO lines, and the lower levels of several shopping centers. It is also connected to the lower levels of many office buildings and several department stores and hotels, as well as the customer service counters of the Municipal Services Building. A branch of the US Post Office is located in the
Suburban Station Suburban Station is an art deco office building and underground commuter rail station in Penn Center, Philadelphia. Its official SEPTA address is 16th Street and JFK Boulevard. The station is owned and operated by SEPTA and is one of the three ...
section of the concourse. *
Richmond Richmond most often refers to: * Richmond, Virginia, the capital of Virginia, United States * Richmond, London, a part of London * Richmond, North Yorkshire, a town in England * Richmond, British Columbia, a city in Canada * Richmond, Californi ...
, Virginia: There are a series of connected tunnels between state government buildings in the city of Richmond. Certain passageways are locked off but a good portion of the tunnels are accessible from buildings. The purpose of the tunnels is not generally known; the two most common explanations are that they were built to allow people to move between buildings in inclement weather or that they were built as part of an emergency evacuation plan. * Rochester, Minnesota: The
Mayo Clinic The Mayo Clinic () is a nonprofit American academic medical center focused on integrated health care, education, and research. It employs over 4,500 physicians and scientists, along with another 58,400 administrative and allied health staf ...
's buildings in the downtown area are interconnected with tunnels and skyways. Other businesses are along the corridors, including a number of
hotel A hotel is an establishment that provides paid lodging on a short-term basis. Facilities provided inside a hotel room may range from a modest-quality mattress in a small room to large suites with bigger, higher-quality beds, a dresser, a re ...
s that often house clinic patients. It is often called a subway, although there are no underground rails in the city. * Rochester, New York: Nazareth College in the southeast portion of Rochester has an extensive underground network of tunnels leading from the dormitories to the major buildings on campus. Rochester Institute of Technology has several underground networks connecting dormitories and academic buildings together. The
University of Rochester The University of Rochester (U of R, UR, or U of Rochester) is a private research university in Rochester, New York. The university grants undergraduate and graduate degrees, including doctoral and professional degrees. The University of ...
has an underground network connecting many of its academic buildings. *
Seattle Seattle ( ) is a seaport city on the West Coast of the United States. It is the seat of King County, Washington. With a 2020 population of 737,015, it is the largest city in both the state of Washington and the Pacific Northwest region o ...
,
Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered o ...
: Several modern undergrounds and a historical tour exist. The Westlake Center shopping mall and its surrounding department stores have underground entrances to the mezzanine level of the Westlake light rail station in the Downtown Seattle Transit Tunnel. Another substantial corridor extends from
Two Union Square Union Square is a skyscraper complex at Sixth Avenue between Union and University Streets in Downtown Seattle, Washington, adjacent to Freeway Park. It consists of two skyscrapers built in the 1980s and primarily used for office space. The enti ...
to Rainier Square, with connections to hotels, the 5th Avenue Theatre, and many retail shops along the way. The
Seattle Underground Tour The Seattle Underground is a network of underground passageways and basements in the Pioneer Square neighborhood of Seattle, Washington, United States. They were located at ground level when the city was built in the mid-19th century but fell ...
in Pioneer Square takes visitors on a humorous guided walk showing the original ground level of many buildings in that area. * Vicksburg, Mississippi: During the Siege of Vicksburg in 1863, Union gunboats lobbed over 22,000 shells into the town, destroying nearly all of the town's housing. As a result, over 500 caves were dug into the clay hills surrounding Vicksburg. The Union soldiers later gave the town the nickname of "Prairie Dog Village" due to these caves. *
Walt Disney World The Walt Disney World Resort, also called Walt Disney World or Disney World, is an entertainment resort complex in Bay Lake and Lake Buena Vista, Florida, United States, near the cities of Orlando and Kissimmee. Opened on October 1, 1971, ...
,
Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and ...
(southwest of
Orlando, Florida Orlando () is a city in the U.S. state of Florida and is the county seat of Orange County. In Central Florida, it is the center of the Orlando metropolitan area, which had a population of 2,509,831, according to U.S. Census Bureau figures re ...
) has a network of utility tunnels used by its employees for transportation between venues, rest areas, staff preparation, and first aid. The main system is under the Magic Kingdom theme park. Other tunnels lie underneath Future World at
Epcot Epcot, stylized in all uppercase as EPCOT, is a theme park at the Walt Disney World Resort in Bay Lake, Florida. It is owned and operated by The Walt Disney Company through its Parks, Experiences and Products division. Inspired by an unre ...
. * Washington D.C.: All of the buildings in the United States Capitol Complex are connected by tunnels and underground walkways, which provide easy passage between legislative office buildings, the Capitol, the
Capitol Visitor Center The United States Capitol Visitor Center (CVC) is a large underground addition to the United States Capitol complex which serves as a gathering point for up to 4,000 tourists and an expansion space for the US Congress.Library of Congress The Library of Congress (LOC) is the research library that officially serves the United States Congress and is the ''de facto'' national library of the United States. It is the oldest federal cultural institution in the country. The libra ...
in inclement weather. The tunnels connecting office buildings are open to the public, but those connecting to the Capitol require security clearance to use. Small electric tramways run from the Capitol building to the Russell, Dirksen, and Hart Senate Office Buildings and to the Rayburn House Office Building. The tunnel between the Capitol and the Cannon House Office Building displays winning pieces of artwork from the annual Congressional Art Competition for high school students. * Wellesley,
Massachusetts Massachusetts (Massachusett: ''Muhsachuweesut Massachusett_writing_systems.html" ;"title="nowiki/> məhswatʃəwiːsət.html" ;"title="Massachusett writing systems">məhswatʃəwiːsət">Massachusett writing systems">məhswatʃəwiːsət'' En ...
: There is an underground network connecting several buildings at Wellesley College.


See also

Other parent categories from the same field: * Rock-cut architecture *
Subterranea (geography) Subterranea are ''underground structures'', both natural (such as caves) and human-made (such as mines). Some subterranea and related topics include: Natural * Caves ** Cenote ** Ice cave ** Sea cave ** Sinkhole * Karst * Lava tube ** Lun ...
: underground structures *
Underground living Underground living refers to living below the ground's surface, whether in natural or manmade caves or structures. Underground dwellings are an alternative to above-ground dwellings for some home seekers, including those who are looking to mini ...
*
Underground construction Underground construction refers to the construction of underground tunnels, shafts, chambers, and passageways, it is also sometimes used to describe the portion of traditional construction that takes place below grade. History Neanderthals also e ...
Types of underground spaces and people, and related topics: * Ant tribe – Chinese sociology term * Rat tribe * Arcology – ecological architecture term *
Catacombs Catacombs are man-made subterranean passageways for religious practice. Any chamber used as a burial place is a catacomb, although the word is most commonly associated with the Roman Empire. Etymology and history The first place to be referred ...
*'' Cities of the Underworld'' documentary television series * Mole people – homeless tunnel dwellers *
Pedway Pedways (short for pedestrian walkways) are elevated or underground walkways, often connecting urban high-rises to each other, other buildings, or the street. They provide quick and comfortable movement from building to building, away from traff ...
– elevated or underground walkways *
Rapid transit Rapid transit or mass rapid transit (MRT), also known as heavy rail or metro, is a type of high-capacity public transport generally found in urban areas. A rapid transit system that primarily or traditionally runs below the surface may be ...
(subway) * Secret passage ** Tunnels in popular culture * Skyway * Utility tunnel


References

{{Authority control Pedestrian infrastructure Urban exploration