
A closed city or town is a settlement where travel or residency restrictions are applied.
Historically, the construction of closed cities became increasingly common after the beginning of the
Cold War
The Cold War was a period of global Geopolitics, geopolitical rivalry between the United States (US) and the Soviet Union (USSR) and their respective allies, the capitalist Western Bloc and communist Eastern Bloc, which lasted from 1947 unt ...
, particularly in the
Soviet Union
The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
.
Since the
dissolution of the Soviet Union
The Soviet Union was formally dissolved as a sovereign state and subject of international law on 26 December 1991 by Declaration No. 142-N of the Soviet of the Republics of the Supreme Soviet of the Soviet Union. Declaration No. 142-Н of ...
in 1991, they remain widespread in
Russia
Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...
and some of the other
post-Soviet countries
The post-Soviet states, also referred to as the former Soviet Union or the former Soviet republics, are the independent sovereign states that emerged/re-emerged from the dissolution of the Soviet Union in 1991. Prior to their independence, they ...
. In modern Russia the closed cities are designated as "closed administrative–territorial formations" (ZATO; , ).
Structure and operations
Closed cities are sometimes represented only on
classified maps that are not available to the general public.
Sometimes, closed cities are indicated obliquely as a nearby insignificant village, with the name of the stop serving the closed city made equivocal or misleading. For mail delivery, a closed city is usually named as the nearest large city and a special postcode, for example, Arzamas‑16, Chelyabinsk‑65. The actual settlement can be rather distant from its namesakes; for instance,
Sarov
Sarov () is a closed city, closed town in Nizhny Novgorod Oblast, Russia. It was known as Gorkiy-130 (Горький-130) and Arzamas-16 (), after a (somewhat) nearby town of Arzamas,SarovLabsCreation of Nuclear Center Arzamas-16/ref> from 194 ...
, designated Arzamas-16, is in the federal republic of
Mordovia, whereas
Arzamas
Arzamas (, ) is a types of inhabited localities in Russia, city in Nizhny Novgorod Oblast, Russia, located on the Tyosha River (a tributary of the Oka River, Oka), east of Moscow. As of 2024, it has a population of 103,629.
History
Arzamas ...
is in
Nizhny Novgorod Oblast
Nizhny Novgorod Oblast () is a federal subjects of Russia, federal subject of Russia (an oblast). Its administrative center is the types of inhabited localities in Russia, city of Nizhny Novgorod. It has a population of 3,119,115 as of the 2021 Ru ...
(roughly away). People not living in a closed city were subject to document checks and
security checkpoints, and explicit permission was required for them to visit. To relocate to a closed city, one would need security clearance by the organization running it, such as the
KGB
The Committee for State Security (, ), abbreviated as KGB (, ; ) was the main security agency of the Soviet Union from 1954 to 1991. It was the direct successor of preceding Soviet secret police agencies including the Cheka, Joint State Polit ...
in Soviet closed cities.
Closed cities may be guarded by a security perimeter with
barbed wire
Roll of modern agricultural barbed wire
Barbed wire, also known as barb wire or bob wire (in the Southern and Southwestern United States), is a type of steel fencing wire constructed with sharp edges or points arranged at intervals along the ...
and
towers
A tower is a tall Nonbuilding structure, structure, taller than it is wide, often by a significant factor. Towers are distinguished from guyed mast, masts by their lack of guy-wires and are therefore, along with tall buildings, self-supporting ...
. The very fact of such a city's existence was often classified, and residents were expected not to divulge their place of residence to outsiders. This lack of freedom was often compensated by better housing conditions and a better choice of goods in retail trade than elsewhere in the country.
In the Soviet Union

Closed cities were established in the
Soviet Union
The Union of Soviet Socialist Republics. (USSR), commonly known as the Soviet Union, was a List of former transcontinental countries#Since 1700, transcontinental country that spanned much of Eurasia from 1922 until Dissolution of the Soviet ...
from the late 1940s onwards under the euphemistic name of "post boxes", referring to the practice of addressing post to them via mailboxes in other cities. They fell into two distinct categories.
# The first category comprised relatively small communities with sensitive military, industrial, or scientific facilities, such as arms plants or
nuclear research sites.
["Secret Cities".GlobalSecurity.org](_blank)
Accessed August 2011. Examples are the modern towns of
Ozyorsk (
Chelyabinsk
Chelyabinsk; , is the administrative center and largest types of inhabited localities in Russia, city of Chelyabinsk Oblast, Russia. It is the List of cities and towns in Russia by population, seventh-largest city in Russia, with a population ...
-65) with a
plutonium
Plutonium is a chemical element; it has symbol Pu and atomic number 94. It is a silvery-gray actinide metal that tarnishes when exposed to air, and forms a dull coating when oxidized. The element normally exhibits six allotropes and four ...
production plant, and
Sillamäe, the site of a
uranium enrichment facility. Even Soviet citizens were not allowed access to these places without proper authorization. In addition to this, some bigger cities were closed for unauthorized access to foreigners, while they were freely accessible to Soviet citizens. These included cities like
Perm, a center for Soviet artillery, munitions, and also aircraft engines production, and
Vladivostok
Vladivostok ( ; , ) is the largest city and the administrative center of Primorsky Krai and the capital of the Far Eastern Federal District of Russia. It is located around the Zolotoy Rog, Golden Horn Bay on the Sea of Japan, covering an area o ...
, the headquarters and primary base of the
Soviet Pacific Fleet.
# The second category consisted of border cities (and some whole border areas, such as the
Kaliningrad Oblast
Kaliningrad Oblast () is the westernmost federal subjects of Russia, federal subject of the Russian Federation. It is a Enclave and exclave, semi-exclave on the Baltic Sea within the Baltic region of Prussia (region), Prussia, surrounded by Pola ...
,
Saaremaa, and
Hiiumaa), which were closed for security purposes. Comparable closed areas existed elsewhere in the
Eastern bloc
The Eastern Bloc, also known as the Communist Bloc (Combloc), the Socialist Bloc, the Workers Bloc, and the Soviet Bloc, was an unofficial coalition of communist states of Central and Eastern Europe, Asia, Africa, and Latin America that were a ...
; a substantial area along the
inner German border
The inner German border ( or ''deutsch–deutsche Grenze''; initially also , zonal boundary) was the frontier between the East Germany, German Democratic Republic (GDR, East Germany) and the West Germany, Federal Republic of Germany (FRG, West ...
and the border between
West Germany
West Germany was the common English name for the Federal Republic of Germany (FRG) from its formation on 23 May 1949 until German reunification, its reunification with East Germany on 3 October 1990. It is sometimes known as the Bonn Republi ...
and
Czechoslovakia
Czechoslovakia ( ; Czech language, Czech and , ''Česko-Slovensko'') was a landlocked country in Central Europe, created in 1918, when it declared its independence from Austria-Hungary. In 1938, after the Munich Agreement, the Sudetenland beca ...
was placed under similar restrictions (although by the 1970s foreigners could cross the latter by train). Citizens were required to have special permits to enter such areas.
The locations of the first category of closed cities were chosen for their geographical characteristics. They were often established in remote places deep in the
Urals
The Ural Mountains ( ),; , ; , or simply the Urals, are a mountain range in Eurasia that runs north–south mostly through Russia, from the coast of the Arctic Ocean to the river Ural (river), Ural and northwestern Kazakhstan. and
Siberia
Siberia ( ; , ) is an extensive geographical region comprising all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has formed a part of the sovereign territory of Russia and its predecessor states ...
, out of reach of enemy bombers. They were built close to rivers and lakes that were used to provide the large amounts of water needed for heavy industry and nuclear technology. Existing civilian settlements in the vicinity were often used as sources of construction labour. Although the closure of cities originated as a strictly temporary measure that was to be normalized under more favorable conditions, in practice the closed cities took on a life of their own and became a notable institutional feature of the Soviet system.
Any movement to and from closed areas was tightly controlled. Foreigners were prohibited from entering them and local citizens were under stringent restrictions. They had to have special permission to travel there or leave, and anyone seeking residency was required to undergo vetting by the
NKVD
The People's Commissariat for Internal Affairs (, ), abbreviated as NKVD (; ), was the interior ministry and secret police of the Soviet Union from 1934 to 1946. The agency was formed to succeed the Joint State Political Directorate (OGPU) se ...
and its successor agencies. Access to some closed cities was physically enforced by surrounding them with
barbed wire
Roll of modern agricultural barbed wire
Barbed wire, also known as barb wire or bob wire (in the Southern and Southwestern United States), is a type of steel fencing wire constructed with sharp edges or points arranged at intervals along the ...
fences monitored by armed guards.
In post-Soviet countries
Russia
Russia has the largest number of closed cities globally. The policy governing these cities underwent significant changes in the late 1980s and early 1990s. The adoption of a new constitution for the Russian Federation in 1993 prompted substantial reforms to the status of closed cities, which were subsequently renamed "closed administrative-territorial formations" (or ZATO, from the Russian acronym, ).
Municipally, all such entities have the status of urban
okrugs, as mandated by federal law.
There are 44 publicly acknowledged closed cities in Russia with a total population of approximately 1.5 million people. Seventy-five percent are administered by the
Russian Ministry of Defense
The Ministry of Defence of the Russian Federation (; MOD) is the governing body of the Russian Armed Forces. The President of Russia is the Supreme Commander-in-Chief of the Armed Forces of the Russian Federation, Commander-in-Chief of the forces ...
, with the remainder under the administration of
Rosatom
State Atomic Energy Corporation Rosatom (commonly referred to as Rosatom rus, Росатом, p=rosˈatəm}), also known as Rosatom State Nuclear Energy Corporation, (), or Rosatom State Corporation, is a Russian State corporation (Russia), sta ...
.
[Nadezhda Kutepova & Olga Tsepilova, "A short history of the ZATO", pp. 148–149, in ''Cultures of Contamination, Volume 14: Legacies of Pollution in Russia and the US'' (Research in Social Problems and Public Policy), editors Michael Edelstein, Maria Tysiachniouk, Lyudmila V. Smirnova. JAI Press, 2007. ] It is believed that about 15 additional closed cities exist, but their names and locations have not been publicly disclosed by the Russian government.
[Greg Kaser, "Motivation and Redirection: Rationale and Achievements in the Russian Closed Nuclear Cities", p. 3, in ''Countering Nuclear and Radiological Terrorism'', editors David J. Diamond, Samuel Apikyan, Greg Kaser. Springer, 2006. ]
Some Russian closed cities are open to foreign investment, but entry for foreigners requires a permit. An example of international cooperation in these cities is the Nuclear Cities Initiative (NCI), a joint effort of the United States
National Nuclear Security Administration and
Minatom, which involves, in part, the cities of
Sarov
Sarov () is a closed city, closed town in Nizhny Novgorod Oblast, Russia. It was known as Gorkiy-130 (Горький-130) and Arzamas-16 (), after a (somewhat) nearby town of Arzamas,SarovLabsCreation of Nuclear Center Arzamas-16/ref> from 194 ...
,
Snezhinsk, and
Zheleznogorsk.
The number of closed cities has been significantly reduced since the mid-1990s. However, on 30 October 2001, foreign travel was restricted without exception in the northern cities of
Norilsk
Norilsk ( rus, Нори́льск, p=nɐˈrʲilʲsk) is a closed city in Krasnoyarsk Krai, Russia, located south of the western Taymyr Peninsula, around 90 km east of the Yenisei, Yenisey River and 1,500 km north of Krasnoyarsk. Norilsk is 300 ...
,
Talnakh,
Kayerkan,
Dudinka, and
Igarka. Russian and Belarusian citizens visiting these cities are not required to have permits; however, local courts have been known to deport Belarusian citizens.
The number of closed cities in Russia is defined by government decree. The reasons for restrictions vary. These cities include:
Altai Krai
*
Sibirsky
Amur Oblast
*
Tsiolkovskyrenamed from Uglegorsk in 2013 and known as Svobodny-18 () before that, site of the second Russian trial
cosmodrome of the Ministry of Defense of the Russian Federation, also called
Svobodny Cosmodrome.
Arkhangelsk Oblast
*
Mirnysite of
Plesetsk Cosmodrome.
Astrakhan Oblast
*
Znamenskformerly known as Kapustin Yar-1 (), home to the
Kapustin Yar (air base) and the
"4th Missile Test Range".
Republic of Bashkortostan
*
Mezhgoryeformerly known as Ufa-105 () and Beloretsk-15 (), home to the 129th Directorate of strategic subjects' technical supply and maintenance.
Chelyabinsk Oblast

*
Lokomotivny
*
Ozyorskformerly known as Chelyabinsk-65 () and Chelyabinsk-40 (), nuclear material processing and recycling plant.
*
Snezhinskformerly known as Chelyabinsk-70 (), site of one of the two major Russian Federal Nuclear Centers.
*
Tryokhgornyformerly known as Zlatoust-36 (), site of development of parts and machinery for atomic stations and weaponry.
Kamchatka Krai
*
Vilyuchinskformerly known as Petropavlovsk-Kamchatsky-50 (), base of a squadron of submarines from the
Russian Pacific Fleet, also involved in the production of nuclear submarines.
Kirov Oblast
*
Pervomayskyformerly known as Yurya-2 ().
Krasnoyarsk Krai
*
Dikson
*
Solnechnyformerly known as Uzhur-4 ().
*
Zelenogorskformerly known as Krasnoyarsk-45 ().
*
Zheleznogorskformerly known as Krasnoyarsk-26 ().
Moscow Oblast
*
Krasnoznamenskformerly known as Golitsyno-2 ().
*
Molodyozhnyformerly known as Naro-Fominsk-5 ().
*
Vlasikhaformerly known as Gorky-2 ().
*
Voskhodformerly known as Novopetrovsk-2 ().
*
Zvyozdny gorodokformerly known as Shchyolkovo-14 ().
Murmansk Oblast
*
Alexandrovskclosed administrative-territorial formation, includes the towns of
Gadzhiyevo,
Polyarny, and
Snezhnogorsk
*
Ostrovnoy
*
Severomorsk
Severomorsk (), known as Vayenga () until 18 April 1951, is a closed city, closed types of inhabited localities in Russia, town in Murmansk Oblast, Russia. Severomorsk is the main administrative base of the Russian Northern Fleet. The town is sit ...
*
Snezhnogorsk
*
Vidyayevo
*
Zaozyorsk
Nizhny Novgorod Oblast

*
Sarov
Sarov () is a closed city, closed town in Nizhny Novgorod Oblast, Russia. It was known as Gorkiy-130 (Горький-130) and Arzamas-16 (), after a (somewhat) nearby town of Arzamas,SarovLabsCreation of Nuclear Center Arzamas-16/ref> from 194 ...
formerly known as Arzamas-16
Orenburg Oblast
*
Komarovsky
Penza Oblast
*
Zarechnyformerly known as Penza-19
Perm Krai

*
Zvyozdnyformerly known as Perm-76 ().
Primorsky Krai
*
Fokinoformerly known as Shkotovo-17 ().
Pskov Oblast
*
Smuravyevo
Saratov Oblast
*
Mikhaylovsky
*
Shikhany
*
Svetly
Sverdlovsk Oblast
*
Lesnoyformerly known as Sverdlovsk-45
*
Novouralsk
Novouralsk (, lit. ''new town in the Ural Mountains, Urals'') is a closed city, closed types of inhabited localities in Russia, town in Sverdlovsk Oblast, Russia, located on the eastern side of the Ural Mountains, about north of Yekaterinburg, ...
formerly known as Sverdlovsk-44
*
Svobodny
*
Uralsky
Tomsk Oblast

*
Seversk
Seversk (, ) is a closed city in Tomsk Oblast, Russia, located northwest of Tomsk on the right bank of the Tom River. The population was 108,590 at the 2010 census and 109,106 at the 2002 census.
It was previously known as ''Pyaty Pochtovy' ...
formerly known as Tomsk-7
Tver Oblast
*
Ozyorny
*
Solnechny
Vladimir Oblast
*
Raduzhny
Zabaykalsky Krai
*
Gornyformerly known as Chita-46 ().
Non-ZATO restricted territories
There is a list of territories within Russia that do not have closed-city status but require special permits for foreigners to visit. The largest locality within such territory is the city of
Norilsk
Norilsk ( rus, Нори́льск, p=nɐˈrʲilʲsk) is a closed city in Krasnoyarsk Krai, Russia, located south of the western Taymyr Peninsula, around 90 km east of the Yenisei, Yenisey River and 1,500 km north of Krasnoyarsk. Norilsk is 300 ...
.
Estonia
There were two closed cities in
Estonia
Estonia, officially the Republic of Estonia, is a country in Northern Europe. It is bordered to the north by the Gulf of Finland across from Finland, to the west by the Baltic Sea across from Sweden, to the south by Latvia, and to the east by Ru ...
:
Sillamäe and
Paldiski
Paldiski is a seaside Populated places in Estonia, town in northwestern Estonia, located on the Pakri Peninsula and adjacent Pakri Islands, Pakri islands in the Gulf of Finland of the Baltic Sea. It is the administrative centre of the Lääne- ...
. As with all the other industrial cities, their population was mainly Russian-speaking. Sillamäe was the site for a chemical factory that produced
fuel rod
Nuclear fuel refers to any substance, typically fissile material, which is used by nuclear power stations or other nuclear devices to generate energy.
Oxide fuel
For fission reactors, the fuel (typically based on uranium) is usually based o ...
s and nuclear materials for the Soviet
nuclear power plant
A nuclear power plant (NPP), also known as a nuclear power station (NPS), nuclear generating station (NGS) or atomic power station (APS) is a thermal power station in which the heat source is a nuclear reactor. As is typical of thermal power st ...
s and
nuclear weapon
A nuclear weapon is an explosive device that derives its destructive force from nuclear reactions, either fission (fission or atomic bomb) or a combination of fission and fusion reactions (thermonuclear weapon), producing a nuclear exp ...
facilities, while Paldiski was home to a
Soviet Navy
The Soviet Navy was the naval warfare Military, uniform service branch of the Soviet Armed Forces. Often referred to as the Red Fleet, the Soviet Navy made up a large part of the Soviet Union's strategic planning in the event of a conflict with t ...
nuclear submarine
A nuclear submarine is a submarine powered by a nuclear reactor, but not necessarily nuclear-armed.
Nuclear submarines have considerable performance advantages over "conventional" (typically diesel-electric) submarines. Nuclear propulsion ...
training centre. Sillamäe was closed until Estonia regained its independence in 1991; Paldiski remained closed until 1994, when the last Russian warship left.
Tartu
Tartu is the second largest city in Estonia after Tallinn. Tartu has a population of 97,759 (as of 2024). It is southeast of Tallinn and 245 kilometres (152 miles) northeast of Riga, Latvia. Tartu lies on the Emajõgi river, which connects the ...
, home to
Raadi Airfield, was partially closed. Foreign academics could visit the
University of Tartu
The University of Tartu (UT; ; ) is a public research university located in the city of Tartu, Estonia. It is the national university of Estonia. It is also the largest and oldest university in the country. , but had to sleep elsewhere.
Kazakhstan

*
Baikonur
Baikonur ( ; ) is a city in Kazakhstan on the northern bank of the Syr Darya river. It is currently leased and administered by the Russian Federation as an enclave until 2050. It was constructed to serve the Baikonur Cosmodrome with adminis ...
, a town close to the
Baikonur Cosmodrome
The Baikonur Cosmodrome is a spaceport operated by Russia within Kazakhstan. Located in the Kazakh city of Baikonur, it is the largest operational space launch facility in terms of area. All Russian Human spaceflight, crewed spaceflights are l ...
in
Kazakhstan
Kazakhstan, officially the Republic of Kazakhstan, is a landlocked country primarily in Central Asia, with a European Kazakhstan, small portion in Eastern Europe. It borders Russia to the Kazakhstan–Russia border, north and west, China to th ...
, which is rented and administered by Russia. Non-resident visitors will need pre-approval from the Russian authorities to visit both the town of Baikonur itself and the Cosmodrome. Note that said approval is completely separate from just having a Russian visa. Some tourism organisations in Kazakhstan provide services in organising trips to visit Baikonur and the museums contained there.
*
Priozersk, Kazakhstan
*
Kurchatov, Kazakhstana former closed city that was known by its postal code, Semipalatinsk-21.
Kyrgyzstan
*
Mailuu-Suu,
Jalal-Abad Region
Jalal-Abad (; ) is a region (''oblast, oblus'') of Kyrgyzstan. Its capital is the city of the same name, Jalal-Abad. It is surrounded by (clockwise from the north) Talas Region, Chüy Region, Naryn Region, Osh Region, and Uzbekistan. Jalal-Abad ...
, a formerly closed
uranium
Uranium is a chemical element; it has chemical symbol, symbol U and atomic number 92. It is a silvery-grey metal in the actinide series of the periodic table. A uranium atom has 92 protons and 92 electrons, of which 6 are valence electrons. Ura ...
mining town, once known as "Mailbox 200".
Latvia
*
Karosta, a former Russian and Soviet naval base.
*
Skrunda-1, a former Soviet communications base. Currently used by the Latvian Armed Forces as of 2022.
Moldova
Moldova
Moldova, officially the Republic of Moldova, is a Landlocked country, landlocked country in Eastern Europe, with an area of and population of 2.42 million. Moldova is bordered by Romania to the west and Ukraine to the north, east, and south. ...
has one partially closed city: the village of
Cobasna (
Rîbnița District
The Rîbnița District (; ; ) is an administrative district of Transnistria (''de facto'') in Moldova (''de jure''). Its seat is the city of Rîbnița, sometimes spelt as "Râbnița". It is located at . The district contains this city and 22 othe ...
), which is under the control of the unrecognized state of
Transnistria
Transnistria, officially known as the Pridnestrovian Moldavian Republic and locally as Pridnestrovie, is a Landlocked country, landlocked Transnistria conflict#International recognition of Transnistria, breakaway state internationally recogn ...
internationally recognized as part of Moldova. The village, on the left bank of the
Dniester
The Dniester ( ) is a transboundary river in Eastern Europe. It runs first through Ukraine and then through Moldova (from which it more or less separates the breakaway territory of Transnistria), finally discharging into the Black Sea on Uk ...
river, contains
a large Soviet-era ammunition depot guarded by Russian troops. Only the Transnistrian and Russian authorities have detailed information about this depot.
Ukraine
Ukraine
Ukraine is a country in Eastern Europe. It is the List of European countries by area, second-largest country in Europe after Russia, which Russia–Ukraine border, borders it to the east and northeast. Ukraine also borders Belarus to the nor ...
had eighteen closed cities, including:
*
Dnipro
Dnipro is Ukraine's fourth-largest city, with about one million inhabitants. It is located in the eastern part of Ukraine, southeast of the Ukrainian capital Kyiv on the Dnieper River, Dnipro River, from which it takes its name. Dnipro is t ...
former closed city, a major center of Soviet
aerospace industry
Aerospace is a term used to collectively refer to the atmosphere and outer space. Aerospace activity is very diverse, with a multitude of commercial, industrial, and military applications. Aerospace engineering consists of aeronautics and astr ...
.
*Simferopol-28,
Crimea
Crimea ( ) is a peninsula in Eastern Europe, on the northern coast of the Black Sea, almost entirely surrounded by the Black Sea and the smaller Sea of Azov. The Isthmus of Perekop connects the peninsula to Kherson Oblast in mainland Ukrain ...
former closed town, a Soviet military space mission control center.
*
Kamianskeformer closed city,
largest Uranium processing factory in former Soviet Union.
*
Feodosia-13, Crimeaformer closed town, a central storage of nuclear weapons.
*
Balaklava
Balaklava ( Ukrainian and , , ) is a settlement on the Crimean Peninsula and part of the city of Sevastopol. It is an administrative center of Balaklavsky District that used to be part of the Crimean Oblast before it was transferred to Sevast ...
,
Sevastopol
Sevastopol ( ), sometimes written Sebastopol, is the largest city in Crimea and a major port on the Black Sea. Due to its strategic location and the navigability of the city's harbours, Sevastopol has been an important port and naval base th ...
– former closed town, the location of a submarine repair plant.
*Chernobyl-2,
Kyiv Oblast
Kyiv Oblast (, ), also called Kyivshchyna (, ), is an Administrative divisions of Ukraine, oblast (province) in central and northern Ukraine. It surrounds, but does not include, the city of Kyiv, which is administered as a city with special sta ...
– former closed town, the location of the receiving unit of the
Duga radar.
*Liubech-1,
Chernihiv Oblast
Chernihiv Oblast (), also referred to as Chernihivshchyna (), is an administrative divisions of Ukraine, oblast (province) in northern Ukraine. The capital city, administrative center of the oblast is the city of Chernihiv. There are 1,511 sett ...
– former closed town, the location of the transmission unit of the Duga radar.
In other countries
Albania
During the
period of communist rule in Albania, the towns of
Çorovodë
Çorovodë ( sq-definite, Çorovoda) is a town and a former municipality in Berat County, Albania
Albania ( ; or ), officially the Republic of Albania (), is a country in Southeast Europe. It is located in the Balkans, on the Adriatic Se ...
and Qyteti Stalin (now
Kuçovë) were closed cities with a military airport, military industry and other critical war infrastructure.
Australia
*
Arnhem Land
Arnhem Land is a historical region of the Northern Territory of Australia. It is located in the north-eastern corner of the territory and is around from the territorial capital, Darwin, Northern Territory, Darwin. In 1623, Dutch East India Compa ...
is a historical region of the
Northern Territory
The Northern Territory (abbreviated as NT; known formally as the Northern Territory of Australia and informally as the Territory) is an states and territories of Australia, Australian internal territory in the central and central-northern regi ...
which requires permits for access to non-Aboriginal individuals beyond public roads.
*
Puckapunyal is a restricted-access town in a military area in
Victoria, home to some 250 families.
Canada
*
Ralston, Alberta is a closed village located in
CFB Suffield.
China
* No. 404 Factory of
China National Nuclear Corporation (
中国核工业总公司第四零四厂), then the
Ministry of Nuclear Industry, in the
Gobi desert
The Gobi Desert (, , ; ) is a large, cold desert and grassland region in North China and southern Mongolia. It is the sixth-largest desert in the world. The name of the desert comes from the Mongolian word ''gobi'', used to refer to all of th ...
in the western part of
Gansu
Gansu is a provinces of China, province in Northwestern China. Its capital and largest city is Lanzhou, in the southeastern part of the province. The seventh-largest administrative district by area at , Gansu lies between the Tibetan Plateau, Ti ...
, is a closed town often called the ''nuclear town'' (
核城). Built in 1958, it is China's biggest nuclear industry base. China built its first military
nuclear reactor
A nuclear reactor is a device used to initiate and control a Nuclear fission, fission nuclear chain reaction. They are used for Nuclear power, commercial electricity, nuclear marine propulsion, marine propulsion, Weapons-grade plutonium, weapons ...
there and 80% of the core parts for China's nuclear bombs were produced there. Until the 1980s, the whole town was closed to outsiders. A nuclear accident happened in 1969, involving a leak. The name "''mine area of Gansu''" (
甘肃矿区) was used for secrecy. In 2007, most residents were moved to nearby
Jiayuguan City.
*Some remote areas in China, such as
Datong Hui and Tu Autonomous County (except Laoye Mountain),
Huangzhong County
Huangzhong District () is a Districts of China, district of Xining, Qinghai, Qinghai Province, China. It is located about east of Qinghai Lake and about southwest of downtown Xining. In 2020 the district had a population of 463,900, of which 153 ...
(except
Kumbum Monastery
Kumbum Monastery (, THL Simplified Phonetic Transcription, THL ''Kumbum Jampa Ling''), also called Ta'er Temple, is a Tibetan gompa in Huangzhong County, Lusar, Xining, Qinghai, China. It was founded in 1583 in a narrow valley close to the vil ...
), and
Huangyuan County around
Xining
Xining is the Capital (political), capital and most populous city of Qinghai province in western China and the largest city on the Tibetan Plateau. As of the 2020 census, it had 2,467,965 inhabitants (2,208,708 as of 2010), of whom 1,954,795 l ...
, the capital of
Qinghai
Qinghai is an inland Provinces of China, province in Northwestern China. It is the largest provinces of China, province of China (excluding autonomous regions) by area and has the third smallest population. Its capital and largest city is Xin ...
, maintain travel restrictions for foreigners. A foreigner must apply for an alien travel document (
外国人旅行证) in advance, and report their accommodation to local police within 24 hours after entering the area.
Germany
*
Riems, Germany, an island in the Bay of Greifswald, is home to the oldest virological research institution in the world and is closed to the public. Quarantine stables and laboratories have a high level of security. This means employees and visitors to the complex must change their clothes and shower when entering and exiting.
Hong Kong

The Frontier Closed Area (FCA) is a restricted zone along the northern border of Hong Kong, serving as a buffer between the closed border and the rest of the territory. Access to this area requires a Closed Area Permit. From 1951 to 2012, the FCA encompassed an area of 28 square kilometres, containing numerous villages. Following several stages of reduction, by 2016, the border town of
Sha Tau Kok remained as the sole settlement within the FCA.
South Korea (ROK)
Within the
Korean Demilitarized Zone
The Korean Demilitarized Zone () is a heavily militarized strip of land running across the Korea, Korean Peninsula near the 38th parallel north. The demilitarized zone (DMZ) is a border barrier that divides the peninsula roughly in half. It wa ...
between
North Korea
North Korea, officially the Democratic People's Republic of Korea (DPRK), is a country in East Asia. It constitutes the northern half of the Korea, Korean Peninsula and borders China and Russia to the north at the Yalu River, Yalu (Amnok) an ...
and
South Korea
South Korea, officially the Republic of Korea (ROK), is a country in East Asia. It constitutes the southern half of the Korea, Korean Peninsula and borders North Korea along the Korean Demilitarized Zone, with the Yellow Sea to the west and t ...
are two "peace villages" (one maintained by each nation):
Daeseong-dong
Daeseong-dong (also called Tae Sung Dong, and Jayu-ui Maeul) is a village in South Korea close to the North Korean border. It lies within the Korean Demilitarized Zone (DMZ). The village is about 1.6 kilometres (1 mile) south of the Bridge o ...
(South) and (possibly)
Kijŏng-dong
Kijŏng-dong, Kijŏngdong, Kijŏng tong or Kaepoong is reportedly a Potemkin village in P'yŏnghwa-ri (), Panmun-guyok, Kaesong, Kaesong Special City, North Korea. It is situated in the North's half of the Korean Demilitarized Zone (DMZ). Also kno ...
(North). Access by non-residents to Daeseong-dong requires a military escort, while Kijŏng-dong is not accessible to visitors.
North Korea (DPRK)
The
Yongbyon Nuclear Scientific Research Center sits within a closed city that occupies 24.8 square kilometers (9.6 sq mi). The classification of a city being closed or not closed is dubious in a North Korean context, as North Korean citizens generally need a permit if they wish to travel outside of their county, and further permits required for entry to
Pyongyang
Pyongyang () is the Capital city, capital and largest city of North Korea, where it is sometimes labeled as the "Capital of the Revolution" (). Pyongyang is located on the Taedong River about upstream from its mouth on the Yellow Sea. Accordi ...
, thus the whole nation could be considered closed.
Mexico
* In
Baja California
Baja California, officially the Free and Sovereign State of Baja California, is a state in Mexico. It is the northwesternmost of the 32 federal entities of Mexico. Before becoming a state in 1952, the area was known as the North Territory of B ...
, the communities on
Guadalupe Island (such as ''Campo Oeste'') can be considered closed towns; because Guadalupe Island is within a
Biosphere
The biosphere (), also called the ecosphere (), is the worldwide sum of all ecosystems. It can also be termed the zone of life on the Earth. The biosphere (which is technically a spherical shell) is virtually a closed system with regard to mat ...
Reserve, the
Mexican government requires special permits in order to visit the island.
Saudi Arabia
*
Mecca
Mecca, officially Makkah al-Mukarramah, is the capital of Mecca Province in the Hejaz region of western Saudi Arabia; it is the Holiest sites in Islam, holiest city in Islam. It is inland from Jeddah on the Red Sea, in a narrow valley above ...
is closed to non-Muslims. Similar restrictions are in place for the city centre of
Medina
Medina, officially al-Madinah al-Munawwarah (, ), also known as Taybah () and known in pre-Islamic times as Yathrib (), is the capital of Medina Province (Saudi Arabia), Medina Province in the Hejaz region of western Kingdom of Saudi Arabia, ...
.
South Africa
*
Alexander Bay, Northern Cape. After diamonds were discovered along this coast in 1925 by
Hans Merensky,
Alexander Bay became known for its mining activities. The town was a high-security area and permits were needed when entered. Today, it is no longer a high-security area and no permits are needed.
Sweden
*
Fårö
Fårö () or in Gutnish is a Baltic Sea island just north of the island of Gotland, itself off mainland Sweden's southeastern coast. It is the second-largest island in the county and it is a popular summer resort. It has its own language, Fårö ...
and the northernmost parts of
Gotland
Gotland (; ; ''Gutland'' in Gutnish), also historically spelled Gottland or Gothland (), is Sweden's largest island. It is also a Provinces of Sweden, province/Counties of Sweden, county (Swedish län), Municipalities of Sweden, municipality, a ...
were closed to foreign citizens until 1998.
United Kingdom
*
Imber, England, has been closed since 1943 when its residents were evicted by the
British Army
The British Army is the principal Army, land warfare force of the United Kingdom. the British Army comprises 73,847 regular full-time personnel, 4,127 Brigade of Gurkhas, Gurkhas, 25,742 Army Reserve (United Kingdom), volunteer reserve perso ...
, who continue to use the village as a training ground for
urban warfare
Urban warfare is warfare in urban areas such as towns and cities. Urban combat differs from combat in the open at both Military operation, operational and the Military tactics, tactical levels. Complicating factors in urban warfare include the p ...
. While most of the village's buildings have been demolished and replaced for training purposes, the village church (
St Giles') was kept intact and the village is occasionally opened to the public during holidays.
*
Foulness Island contains two villages with permanent residences, but public right of way is limited to certain paths and access controlled by the
Ministry of Defence
A ministry of defence or defense (see American and British English spelling differences#-ce.2C -se, spelling differences), also known as a department of defence or defense, is the part of a government responsible for matters of defence and Mi ...
. The site contains an active live firing range, as well as several inactive firing ranges and other structures as well as the site of the development and testing of the UK's first atomic weapons.
United States

*
Dugway, Utah, inside the
Dugway Proving Ground
Dugway Proving Ground (DPG) is a United States Army facility established in 1942 to test biological and chemical weapons, located about southwest of Salt Lake City, Utah and south of the Utah Test and Training Range.
Location
Dugway Provin ...
.
* The
Gold Coast Historic District in
Richland, Washington
Richland () is a city in Benton County, Washington, United States. It is located in southeastern Washington at the confluence of the Yakima River, Yakima and the Columbia River, Columbia Rivers. As of the 2020 census, the city's population was ...
, was a closed city during the
Manhattan Project
The Manhattan Project was a research and development program undertaken during World War II to produce the first nuclear weapons. It was led by the United States in collaboration with the United Kingdom and Canada.
From 1942 to 1946, the ...
.
*
Johnston Atoll
Johnston Atoll is an Unincorporated territories of the United States, unincorporated territory of the United States, under the jurisdiction of the United States Air Force (USAF). The island is closed to public entry, and limited access for mana ...
is closed to public entry, with limited access for management needs if one is granted a letter of authorization from the
United States Air Force
The United States Air Force (USAF) is the Air force, air service branch of the United States Department of Defense. It is one of the six United States Armed Forces and one of the eight uniformed services of the United States. Tracing its ori ...
.
*
Los Alamos, New Mexico
Los Alamos (, meaning ''The Poplars'') is a census-designated place in Los Alamos County, New Mexico, United States, that is recognized as one of the development and creation places of the Nuclear weapon, atomic bomb—the primary objective of ...
, was a closed city during the Manhattan Project.
*
Mercury, Nevada, is within the
Nevada Test Site
The Nevada National Security Sites (N2S2 or NNSS), popularized as the Nevada Test Site (NTS) until 2010, is a reservation of the United States Department of Energy located in the southeastern portion of Nye County, Nevada, about northwest of ...
, the primary testing location of American nuclear devices from 1951 to 1992, currently called Nevada National Security Site, and is currently closed as part of this site.
*
Oak Ridge, Tennessee
Oak Ridge is a city in Anderson County, Tennessee, Anderson and Roane County, Tennessee, Roane counties in the East Tennessee, eastern part of the U.S. state of Tennessee, about west of downtown Knoxville, Tennessee, Knoxville. Oak Ridge's po ...
, was a closed city during the Manhattan Project.
*
Hart Island in New York City: former military site, a city
potter's field and occasional site of crisis
mass grave
A mass grave is a grave containing multiple human corpses, which may or may Unidentified decedent, not be identified prior to burial. The United Nations has defined a criminal mass grave as a burial site containing three or more victims of exec ...
s including for
1918 flu, AIDS, and COVID-19 victims. Some visitors may be allowed after 2023.
*
Plum Island, New York, home of the
Plum Island Animal Disease Center
Between 1957 and 1962, approximately one-third of the United States was closed to Soviet citizens.
Only seven states were accessible in their entirety: Oregon, Wyoming, Utah, North Carolina, Arkansas, Vermont, and Mississippi.
[Russians Were Once Banned From a Third of the U.S.](_blank)
National Geographic
''National Geographic'' (formerly ''The National Geographic Magazine'', sometimes branded as ''Nat Geo'') is an American monthly magazine published by National Geographic Partners. The magazine was founded in 1888 as a scholarly journal, nine ...
.
In popular culture
The 2020 film ''
Tenet'' prominently features a fictional Soviet-era closed city in Siberia called Stalsk-12.
See also
*
Coast Guard City
*
Exclusion zone
*
Internal passport
*
Border barrier
A border barrier, border fence or border wall is a separation barrier that runs along or near an international border. Such barriers are typically constructed for border control purposes such as curbing illegal immigration, human trafficking, a ...
*
Separation barrier
A separation barrier or separation wall is a Barricade, barrier, wall or fence, constructed to limit the movement of people across a certain line or border, or to ethnic segregation, separate peoples or cultures. A separation barrier that runs a ...
*
Closed military townlet
* ''
Naukograd''
*
Nuclear Cities Initiative
*
''Propiska'' in the Soviet Union
*
List of cities with defensive walls
References
Further reading
* Bukharin, Oleg (September/October 1998)
"Retooling Russia's Nuclear Cities" ''The Bulletin of the Atomic Scientists''Educational Foundation for Nuclear Science.
*
*
External links
*
Current list of (acknowledged) closed cities / areas, from the Russian Federation Administration website
Russia's closed cities are open and shut caserticle from ''Russia Journal''. ''(Original source requires paid subscription&nbs
)''
National Nuclear Security Administration, U.S. Department of Energy website.(article), fro
www.globalsecurity.orgRight to the city in former Soviet Union closed cities (ZATO) Andrius Ropolas's paper focusing upon the social aspects of closed cites. Helpful bibliography.
;Maps
*
*
Closed cities map
{{Authority control
Geography of Russia
Military history of the Soviet Union
Society of Russia
Science and technology in Russia
Science and technology in the Soviet Union
Soviet phraseology
Exclusion zones