
The architecture of Ottawa is most marked by the city's role as the
national capital of Canada. This gives the city a number of monumental structures designed to represent the federal government and the nation. As a historic city, the most significant architecture in the city centre tends to be
Gothic Revival
Gothic Revival (also referred to as Victorian Gothic or neo-Gothic) is an Architectural style, architectural movement that after a gradual build-up beginning in the second half of the 17th century became a widespread movement in the first half ...
,
Romantic and other
Picturesque
Picturesque is an aesthetic ideal introduced into English cultural debate in 1782 by William Gilpin in ''Observations on the River Wye, and Several Parts of South Wales, etc. Relative Chiefly to Picturesque Beauty; made in the Summer of the Year ...
styles of architecture, with the
Parliament Buildings, dating from the 1850s, being an example of Gothic Revival. Other buildings in the city follow
formalistic and
functional architectural styles.
Ottawa
Ottawa is the capital city of Canada. It is located in the southern Ontario, southern portion of the province of Ontario, at the confluence of the Ottawa River and the Rideau River. Ottawa borders Gatineau, Gatineau, Quebec, and forms the cor ...
has always had a mix of different architectural styles, varying considerably based on what era a building or neighbourhood was constructed in. While founded in the early nineteenth century, few buildings outside of the
Byward Market
The ByWard Market (), is a retail and entertainment district in the downtown core of Ottawa, Ontario, Canada. It is located east of the government and business district. The Market district includes the market buildings and open-air market alo ...
, Ottawa's old town, survive from that era and the vast majority of the city's structures date from the twentieth century. Much of the downtown was also greatly transformed in the 1960s and 1970s, and the swath of suburbs that surround the city also date from this period. Most of the city's remaining 19th century buildings are in the
Byward Market
The ByWard Market (), is a retail and entertainment district in the downtown core of Ottawa, Ontario, Canada. It is located east of the government and business district. The Market district includes the market buildings and open-air market alo ...
,
Parliament Hill
Parliament Hill (), colloquially known as The Hill, is an area of Crown land on the southern bank of the Ottawa River that houses the Parliament of Canada in downtown Ottawa, Ontario. It accommodates a suite of Gothic revival buildings whose ...
,
Sandy Hill,
New Edinburgh
New Edinburgh is a neighbourhood in Rideau-Rockcliffe Ward, in Ottawa, Ontario, Canada. It is located to the northeast of the downtown core. It is bordered on the west by the Rideau River, to the north by the Ottawa River, to the south by Beec ...
, and to a lesser extent in
Centretown
Centretown is a neighbourhood in Somerset Ward, in central Ottawa, Ontario, Canada. It is defined by the city as "the area bounded on the north by Gloucester Street and Lisgar Street, on the east by the Rideau Canal, on the south by the Qu ...
. Areas such as the Byward Market and Parliament Hill allow the city to retain a certain European character despite the dominance of modern architecture.
Urban planning
Unlike several other national capitals, such as
Paris
Paris () is the Capital city, capital and List of communes in France with over 20,000 inhabitants, largest city of France. With an estimated population of 2,048,472 residents in January 2025 in an area of more than , Paris is the List of ci ...
and
Washington, D.C.
Washington, D.C., formally the District of Columbia and commonly known as Washington or D.C., is the capital city and federal district of the United States. The city is on the Potomac River, across from Virginia, and shares land borders with ...
, Ottawa was never built to a master plan. However, several commissions have played a role in determining the shape of the city.
Colonel By envisioned building several grand boulevards but the difficulties of expropriation and demolition prevented this from happening. In the late 1880s,
Prime Minister Sir Wilfrid Laurier developed a 50-year vision of the city's future development and created the
Ottawa Improvement Commission (OIC). The early years of the OIC under the direction of Montreal-born architect
Frederick Todd
Frederick Gage Todd (March 11, 1876 – February 15, 1948) was the first resident landscape architect in Canada. For the majority of his life he was one of a small group committed to the art and practice of structuring urban growth in the first ...
saw the removal of industry along the canal, the definition of
Patterson Creek
Patterson Creek is a U.S. Geological Survey. National Hydrography Dataset high-resolution flowline dataThe National Map accessed August 15, 2011 tributary of the North Branch Potomac River in West Virginia's Eastern Panhandle, in the United Stat ...
and the transfer of
Rockcliffe Park to the federal government. In 1913,
Sir Robert Borden
Sir Robert Laird Borden (June 26, 1854 – June 10, 1937) was a Canadian lawyer and Conservative politician who served as the eighth prime minister of Canada from 1911 to 1920. He is best known for his leadership of Canada during World ...
appointed the
Sir Henry Holt Commission
The National Capital Commission (NCC; , CCN) is the Crown corporations of Canada, Crown corporation responsible for development, urban planning, and conservation in National Capital Region (Canada), Canada's Capital Region (Ottawa, Ontario and ...
which was the first to state the need for a national capital region and also the removal of railway lines from the downtown core.

Twenty years later, the
Federal District Commission and
Prime Minister Mackenzie King urged the federal government to acquire land, which eventually led to the creation of
Confederation Square. In 1939, King invited
Jacques Gréber
Jacques-Henri-Auguste Gréber (10 September 1882 – 5 June 1962) was a French architect specializing in landscape architecture and urban design. He was a strong proponent of the Beaux-Arts style and a contributor to the City Beautiful movement ...
to create a master plan for the city. This plan proposed new parkways along the Ottawa and Rideau Rivers, included the idea for the
Greenbelt, and urged the need for a ceremonial route to Parliament but the plan was not approved until 1951 by the government of
Louis St. Laurent
Louis Stephen St. Laurent (; February 1, 1882 – July 25, 1973) was a Canadian lawyer and politician who served as the 12th prime minister of Canada from 1948 to 1957.
Born and raised in southeastern Quebec, St. Laurent was a leading la ...
. Gréber's Plan has mostly been implemented and still affects the city today.
In 1958, the
National Capital Commission
The National Capital Commission (NCC; , CCN) is the Crown corporation responsible for development, urban planning, and conservation in Canada's Capital Region (Ottawa, Ontario and Gatineau, Quebec), including administering most lands and build ...
(NCC) replaced the Federal District Commission. As a federal agency, the NCC worked along with were then many individual municipal governments on the Ontario and Quebec sides in planning and designing the city. It acquired the lands for the Greenbelt and in the 1960s it removed the railway tracks from downtown, making rail travel less accessible, but also opening the Rideau Canal as a scenic tourist destination. The NCC continues to have a major role in planning and does have a long range plan for how to showcase the region as a national capital, but has limited legitimacy as an unelected bureaucracy.
The streets of central Ottawa follow a grid pattern, but it is frequently disrupted by the
Rideau River
The Rideau River (, ) is a river in Eastern Ontario, Canada. The river flows north from Upper Rideau Lake and empties into the Ottawa River at the Rideau Falls in Ottawa, Ontario. Its length is .
As explained in a writing by Samuel de Champl ...
and
Rideau Canal
The Rideau Canal is a 202-kilometre long canal that links the Ottawa River at Ottawa with the Cataraqui River and Lake Ontario at Kingston, Ontario, Canada. Its 46 Lock (water navigation), locks raise boats from the Ottawa River 83 metres (272 ...
, ensuring that few streets in most of the older neighbourhoods are very long. Outside of the core, the roads follow the modern standard of large avenues forming a grid, interspersed with a network of crescents and cul-de-sacs which create low-traffic, suburban neighbourhoods. The
Queensway, a major
highway
A highway is any public or private road or other public way on land. It includes not just major roads, but also other public roads and rights of way. In the United States, it is also used as an equivalent term to controlled-access highway, or ...
, crosses almost all of the city from east to west, going just south of downtown. It was built in the 1960s, mostly over former railway tracks, and thus did not entail the same urban destruction as expressways in other cities. There are five road bridges, and one rail bridge, crossing over the
Ottawa River
The Ottawa River (, ) is a river in the Canadian provinces of Ontario and Quebec. It is named after the Algonquin word "to trade", as it was the major trade route of Eastern Canada at the time. For most of its length, it defines the border betw ...
, four of which are in the downtown area, ensuring that much of the interprovincial traffic, including many large trucks, pass through the centre of town.
Several planning decisions have played an important role in the development of Ottawa and its architecture. One long standing rule that had a great effect on the
downtown core
The Downtown Core is the historical and downtown centre of the city-state of Singapore and the main commercial area in Singapore excluding reclaimed lands with two integrated resorts such as the Marina Bay Sands, one of the most expensive buil ...
, was a prohibition on buildings being taller than the tall
Peace Tower
The Peace Tower () is a focal bell and clock tower sitting on the central axis of the Centre Block of the Canadian parliament buildings in Ottawa, Ontario. The present incarnation replaced the Victoria Tower, after the latter burned down in ...
. It was instituted to prevent the Parliament Buildings from being dwarfed by more modern structures. Therefore Ottawa's central business district does not have the towering buildings found in most other North American cities, instead having a considerable number of mid-sized towers.This rule however is relaxed outside the downtown area, resulting in tall structures across the city, such as the
Claridge Icon
The Claridge Icon is a 45-storey condominium tower in Ottawa, Ontario, Canada. It is located at the intersection of Carling Avenue and Preston Street (Ottawa), Preston Street in Little Italy, Ottawa, Little Italy. When the structure topped out in ...
in Little Italy.
Ottawa is home to a large
Greenbelt circling the entire urban core. It was created as an attempt to limit sprawl and encourage density, with mixed success. The Greenbelt has remained largely intact, but Ottawa's newest suburbs such as
Kanata,
Barrhaven
Barrhaven is a suburb of Ottawa, Ontario, Canada. It is located about southwest of the city's downtown core. Prior to amalgamation with Ottawa in 2001, Barrhaven was part of the City of Nepean. Its population as of the Canada 2021 Census was 10 ...
, and
Orleans have jumped over the belt. The Greenbelt is increasingly becoming a wide avenue of green between two developed areas. Prior to amalgamation in 2000 the region was divided into several communities each with its own planning guidelines and the suburbs have distinct characters. Kanata is especially notable as developer
Bill Teron's attempt to create a modern suburb embracing
garden city principles.
Urban Design Review Panel
The Downtown Ottawa Urban Design Review Panel is a commission set up by the City of Ottawa to guide and raise architectural design standards within the downtown core. It was formed in 2005 and consists of seven architects and 3 landscape architects who review development proposals, suggest changes, and make approval recommendations. The panel is part of the city's official plan to improve the overall design standards through incentives such as awards and design competitions. But it received criticism for being ineffective. In December 2009, all seven architects on the panel resigned in protest to Ottawa City Council, stating "that they are wasting their time in a largely fruitless effort to improve architecture" and that "design doesn't matter to this pariticular council".
The panel was restructured on October 6, 2010. Ottawa's Urban Design Review Panel is now a permanent advisory panel made up of volunteer design professionals who perform a formal design review process and provide design recommendations for capital and private sector development projects that fall within the city's Design Priority Areas (no longer Downtown only). According to the panel's website, its purpose is to "enhance the City's capabilities in achieving architectural and urban design excellence."
Institutional architecture
Federal government
The presence of the federal government has shaped every facet of the city of Ottawa, and its architecture has been dramatically affected for both good and ill. Ottawa exists as a major city almost solely because it was selected to be the capital of the new nation of Canada, and the federal government remains the dominant employer in the city. Many of Ottawa's most acclaimed structures are the result of federal government projects, but the affinity for cheapness and blandness of recent government buildings has also played a central role in Ottawa's perceived architectural dullness.

In the years after
Canadian Confederation
Canadian Confederation () was the process by which three British North American provinces—the Province of Canada, Nova Scotia, and New Brunswick—were united into one federation, called the Name of Canada#Adoption of Dominion, Dominion of Ca ...
, the
Government of Canada
The Government of Canada (), formally His Majesty's Government (), is the body responsible for the federation, federal administration of Canada. The term ''Government of Canada'' refers specifically to the executive, which includes Minister of t ...
constructed a series of monumental structures in Ottawa. The most important of these buildings was the
Parliament of Canada
The Parliament of Canada () is the Canadian federalism, federal legislature of Canada. The Monarchy of Canada, Crown, along with two chambers: the Senate of Canada, Senate and the House of Commons of Canada, House of Commons, form the Bicameral ...
, unquestionably Ottawa's most famous building and one also acclaimed by architectural critics. The parliamentary complex consists of a series of
Neo-Gothic
Gothic Revival (also referred to as Victorian Gothic or neo-Gothic) is an architectural movement that after a gradual build-up beginning in the second half of the 17th century became a widespread movement in the first half of the 19th century ...
structures. They are one of the world's most prominent examples of
Victorian High Gothic, with no attempts to ape medievalism, but rather a recombination of Gothic forms into a wholly original style of building. Early civil service buildings were built in similarly high style with the
Second Empire Style
Second Empire style, also known as the Napoleon III style, is a highly Eclecticism in architecture, eclectic style of architecture and decorative arts originating in the Second French Empire. It was characterized by elements of many differe ...
Langevin Block and Baronial
Connaught Building
The Connaught Building is a historic office building in Ottawa, Ontario, Canada, owned by Public Services and Procurement Canada. It is located at 555 MacKenzie Avenue, just south of the United States Embassy. To the east, the building looks out o ...
being two prominent examples.
The Government of Canada Visitor Welcome Centre, a built addition to the parliament buildings as one of many ongoing projects on the site, and works to combine
Neo-gothic
Gothic Revival (also referred to as Victorian Gothic or neo-Gothic) is an architectural movement that after a gradual build-up beginning in the second half of the 17th century became a widespread movement in the first half of the 19th century ...
and contemporary architectural styles in a way that blends the new architecture into its historical context.
Subsequent decades saw the federal government embrace modernism. The attitude towards government buildings also changed. In earlier eras, all government buildings were considered to be important symbols of the country, and designed to be both monumental and functional. However, by the 1960s, efficiency and cost effectiveness were the main goals of government projects. The many government structures built during this era thus tend to be models of International Style minimalism, unornamented, with no attempt at distinctiveness. Moreover, in an era of political discontent over high taxes it was even a priority that the buildings not be cheap, but also look cheap so that visitors from the regions wouldn't feel that the federal government was wasting their money in Ottawa. In this era the federal government decided to erect many of its new buildings outside of the downtown core. Partially for political reasons, the government of Prime Minister
Pierre Trudeau
Joseph Philippe Pierre Yves Elliott Trudeau (October 18, 1919 – September 28, 2000) was a Canadian politician, statesman, and lawyer who served as the 15th prime minister of Canada from 1968 to 1979 and from 1980 to 1984. Between his no ...
opted to build a series of massive federal government office towers on the Quebec side of the border, most notably the
Place du Portage and
Terrasses de la Chaudière
The Terrasses de la Chaudière () is a complex of government office buildings in Gatineau, Quebec, Canada. The complex was built in 1978 as part of Prime Minister Pierre Trudeau's initiative to see more federal workers based in the Quebec side of ...
. In the western part of Ottawa a cluster of government buildings were built at
Tunney's Pasture. The downtown core did see a great deal of building during this era, especially after the city eased its 150-foot height restriction on office towers. Examples include the
Department of National Defence Headquarters by the canal and the
Place de Ville
Place de Ville is a complex of office towers in downtown Ottawa, Ontario, Canada. It consists of four office buildings: Place de Ville A, B, and C; and the 'Podium' building, which houses a shuttered "piggy-back" cinema enveloped with function ...
complex, built by private developer
Robert Campeau but largely housing government departments.

Today the federal government has stuck with modernist simplicity for its functional buildings, but has turned again to monumental architecture for projects of national significance. Most notable are the three museums that have been built in the national capital over the last three decades. The new homes of the
Canadian Museum of Civilization
The Canadian Museum of History () is a national museum on anthropology, Canadian history, cultural studies, and ethnology in Gatineau, Quebec, Canada. The purpose of the museum is to promote the heritage of Canada, as well as support related res ...
,
National Gallery of Canada
The National Gallery of Canada (), located in the capital city of Ottawa, Ontario, is Canada's National museums of Canada, national art museum. The museum's building takes up , with of space used for exhibiting art. It is one of the List of large ...
, and the
Canadian War Museum
The Canadian War Museum (CWM) () is a National museums of Canada, national museum on the military history of Canada, country's military history in Ottawa, Ontario, Canada. The museum serves as both an educational facility on Canadian military hist ...
are unique examples of postmodern architecture. All cost vast amounts of money, but they have also met with international acclaim. They also have allowed the capital to become a showcase for buildings by three of Canada's most prominent architects:
Moshe Safdie
Moshe Safdie (; born July 14, 1938) is an architect, urban planner, educator, theorist, and author. He is well known for incorporating principles of socially responsible design throughout his six-decade career. His projects include cultural, ed ...
,
Douglas Cardinal, and
Raymond Moriyama
Raymond Junichi Moriyama (October 11, 1929 – September 1, 2023) was a Canadian architect.
The private practice in Toronto he co-founded with Ted Teshima, Moriyama & Teshima Architects, was renowned for designing many major buildings across ...
. The
OPL and LAC Joint Facility is an ongoing project by the City of Ottawa, designed by
Diamond Schmitt and KWC Architects whose form rejects traditional rectilinear geometry. The building's design is strongly connected to the natural landscape of the LeBreton Flats Area and will hopefully add to the list of critically acclaimed architecture found in Ottawa.
Universities
Ottawa's three universities,
Carleton University
Carleton University is an English-language public university, 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 se ...
,
Saint Paul University
Saint Paul University () is a bilingual Catholic university federated with the University of Ottawa since 1965. It is located on Main Street in Canada's capital city, Ottawa, Ontario. Fully bilingual, it offers instruction in both of the countr ...
and the
University of Ottawa
The University of Ottawa (), often referred to as uOttawa or U of O, is a Official bilingualism in Canada, bilingual public research university in Ottawa, Ontario, Canada. The main campus is located on directly to the northeast of Downtown Ot ...
, encompass a wide variety of architectural styles.

The
University of Ottawa
The University of Ottawa (), often referred to as uOttawa or U of O, is a Official bilingualism in Canada, bilingual public research university in Ottawa, Ontario, Canada. The main campus is located on directly to the northeast of Downtown Ot ...
(U of O) was founded in the nineteenth century, reflected architecturally by the University's buildings of that era, including
100 Laurier, formerly the 'Juniorat du Sacre-Coeur', a college of the University once ran by the Oblates of Mary Immaculate. It currently houses the university's Department of Visual Arts and the University Gallery. Also notable is Tabaret Hall (erected 1905), a neoclassical building designed by
A. Von Herbulis, which is an Ottawa landmark and also inspired the University's logo. The architecture of the U of O is also noted for its embrace of
brutalism
Brutalist architecture is an architectural style that emerged during the 1950s in the United Kingdom, among the reconstruction projects of the post-war era. Brutalist buildings are characterised by minimalist constructions that showcase the b ...
, including Morisset Hall, a massive poured concrete building that houses the central libraries of the University. The SITE Building completed in 1997, a highly postmodern structure that has attracted much acclaim, breaking with the University's late 20th century trend of
modernist architecture
Modern architecture, also called modernist architecture, or the modern movement, is an architectural architectural movement, movement and architectural style, style that was prominent in the 20th century, between the earlier Art Deco Architectu ...
. A newer project, the Desmarais building at the prominent intersection of Laurier and Nicholas, houses the Telfer School of Management and the Faculty of Arts.
Saint Paul University, an ecumenical Pontifical Catholic University which is loosely federated with the University of Ottawa, consists primarily of two buildings: Guigues Hall and Laframboise Hall. Both buildings have been constructed in the modern style, and are accompanied by a considerable amount of landscaping, as the Saint Paul campus is located on a prime spot along the Rideau River. The most notable building affiliated with Saint Paul University is the nearby Maison Deschatelets, a residence for religious scholars owned by the Missionary Oblates of Mary Immaculate.
Carleton University
Carleton University is an English-language public university, 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 se ...
, founded in 1942, is located south of downtown on a verdant campus stretched between the
Rideau Canal
The Rideau Canal is a 202-kilometre long canal that links the Ottawa River at Ottawa with the Cataraqui River and Lake Ontario at Kingston, Ontario, Canada. Its 46 Lock (water navigation), locks raise boats from the Ottawa River 83 metres (272 ...
and
Rideau River
The Rideau River (, ) is a river in Eastern Ontario, Canada. The river flows north from Upper Rideau Lake and empties into the Ottawa River at the Rideau Falls in Ottawa, Ontario. Its length is .
As explained in a writing by Samuel de Champl ...
. It is itself home to one of Canada's premier schools of architecture. The design of Carleton's campus and buildings deliberately rejected monumentalism, focusing instead on the academic
quadrangle, aiming to present an egalitarian rather than elite sensibility. The University's current building projects include a new River Building adjacent to the Rideau River, which was completed in 2011. The tallest academic building in Ottawa is Carleton's
Dunton Tower; completed in 1971, the international style building sits along one side of the quadrangle and is Carleton's most visible architectural landmark.
Embassies
Ottawa's role as the nation's capital also means that it is home to over a hundred
foreign missions. These embassies have an important role in the city's architecture. Many embassies and ambassadorial residences are located in notable heritage structures.The former U.S Embassy on 100 Wellington Street for example has held a prominent location in Canada's parliamentary precinct, and has since been reclaimed as an
Indigenous Peoples Space. Many of the old mansions built by
lumber baron
A business magnate, also known as an industrialist or tycoon, is a person who is a powerful entrepreneur and investor who controls, through personal enterprise ownership or a dominant shareholding position, a firm or industry whose goods or ser ...
s or early politicians now house embassies, and the foreign missions help keep many of these buildings in good condition. This is especially important in older parts of the city such as
Sandy Hill and
Rockcliffe Park. Examples include the Algerian Embassy in
Fleck/Paterson House, the British high commissioner residence at
Earnscliffe, and the High Commission of Brunei in
Stadacona Hall. Those nations that choose to build a new structure to hold the embassy often incorporate local styles and motifs into their buildings, bringing added diversity to Ottawa's architecture. The new
Saudi Arabian and
Kuwaiti incorporate distinctly Middle Eastern design elements, while the
American embassy is a distinctly
Federal style
Federal-style architecture is the name for the classical architecture built in the United States following the American Revolution between 1780 and 1830, and particularly from 1785 to 1815, which was influenced heavily by the works of And ...
structure.
Domestic architecture
Ottawa's domestic architecture is dominated by single family homes. There are also smaller numbers of
semi-detached
A semi-detached house (often abbreviated to semi) is a single-family Duplex (building), duplex dwelling that shares one common party wall, wall with its neighbour. The name distinguishes this style of construction from detached houses, with no sh ...
,
rowhouse
A terrace, terraced house ( UK), or townhouse ( US) is a type of medium-density housing which first started in 16th century Europe with a row of joined houses sharing side walls. In the United States and Canada these are sometimes known as row ...
s, and
apartment building
An apartment (American English, Canadian English), flat (British English, Indian English, South African English), tenement ( Scots English), or unit (Australian English) is a self-contained housing unit (a type of residential real estate) ...
s. Most domestic buildings are clad in brick, with small numbers covered in wood or stone.
Ottawa has several older neighbourhoods clustered around the downtown core, including
the Glebe
The Glebe is a neighbourhood in Ottawa, Ontario, Canada. It is located just south of Downtown Ottawa in the Capital Ward. As of 2016, the neighbourhood had a population of 13,055.
The Glebe is bounded on the north by the Queensway, on the e ...
,
Sandy Hill,
New Edinburgh
New Edinburgh is a neighbourhood in Rideau-Rockcliffe Ward, in Ottawa, Ontario, Canada. It is located to the northeast of the downtown core. It is bordered on the west by the Rideau River, to the north by the Ottawa River, to the south by Beec ...
,
Centretown
Centretown is a neighbourhood in Somerset Ward, in central Ottawa, Ontario, Canada. It is defined by the city as "the area bounded on the north by Gloucester Street and Lisgar Street, on the east by the Rideau Canal, on the south by the Qu ...
,
Lower Town and
Old Ottawa South
Old Ottawa South is an older urban neighbourhood in Capital Ward in Ottawa, Ontario, Canada. Old Ottawa South is a relatively small and compact neighbourhood, located between the Rideau Canal (to the north) and the Rideau River (to the south). ...
. These areas were mainly built up in the late nineteenth and early twentieth centuries. The houses in these areas tend to be in
Victorian or
Queen Anne Revival style, but rarely have any conspicuous ornamentation. These are usually two- or three-storey single homes. Recent
infill
In urban planning, infill, or in-fill, is the rededication of land in an Urban area, urban environment, usually Urban open space, open-space, to new construction. Infill also applies, within an urban polity, to construction on any Greenfield land, ...
s in these neighbourhoods have often taken the form of townhouses. Red brick, sometimes painted other colours, is the dominant surface material. Most houses have sizable lots, with a driveway running to a
shed
A shed is typically a simple, single-storey (though some sheds may have two or more stories and or a loft) roofed structure, often used for storage, for hobby, hobbies, or as a workshop, and typically serving as outbuilding, such as in a bac ...
, or a small lane way running behind the buildings. In the 1920s and 1930s new styles were imported, and many houses from this era take inspiration from the
Arts and Crafts
The Arts and Crafts movement was an international trend in the Decorative arts, decorative and fine arts that developed earliest and most fully in the British Isles and subsequently spread across the British Empire and to the rest of Europe and ...
and
Prairie
Prairies are ecosystems considered part of the temperate grasslands, savannas, and shrublands biome by ecologists, based on similar temperate climates, moderate rainfall, and a composition of grasses, herbs, and shrubs, rather than trees, as the ...
styles.
Like most of North American, the suburbs built in the years after the Second World War were dominated by the
ranch house
Ranch (also known as American ranch, California ranch, rambler, or rancher) is a domestic architectural style that originated in the United States. The ranch-style house is noted for its long, close-to-the-ground profile, and wide open layout. ...
. Areas like
Alta Vista and the older parts of
Nepean are dominated by these quickly built single storey houses with a
garage attached and little overt styling. More recent suburbs have moved to larger homes, generally with two or more stories and with more ornamentation, such as
gable
A gable is the generally triangular portion of a wall between the edges of intersecting roof pitches. The shape of the gable and how it is detailed depends on the structural system used, which reflects climate, material availability, and aesth ...
s,
dormer window
A dormer is a roofed structure, often containing a window, that projects vertically beyond the plane of a pitched roof. A dormer window (also called ''dormer'') is a form of roof window.
Dormers are commonly used to increase the usable spac ...
s, and
balconies
A balcony (from , "scaffold") is a platform projecting from the wall of a building, supported by columns or console brackets, and enclosed with a balustrade, usually above the ground floor. They are commonly found on multi-level houses, apartme ...
. This
neo-eclectic style dominates that rapidly growing areas outside the Greenbelt, such as Kanata and Barrhaven.

Beginning in the 1960s, a number of large apartment buildings were erected in Ottawa, the first of these being the Juliana on Bronson St. which was built in 1962. During the years after the 1960s and 1970s Ottawa embraced a decentralized strategy, and while some of these buildings are located in the core, most are spread out across different parts of the city. Clusters of buildings were placed in former industrial areas such as
Lees Avenue
Lees Avenue is both a road and a neighbourhood in Ottawa, Ontario, Canada. The area lies in the narrow stretch between the Rideau Canal and Rideau River south of Sandy Hill and the Queensway and is part of Old Ottawa East. The neighbourhood i ...
and Hurdman. Others were erected in the suburbs that were being built in this era such as
Britannia
The image of Britannia () is the national personification of United Kingdom, Britain as a helmeted female warrior holding a trident and shield. An image first used by the Romans in classical antiquity, the Latin was the name variously appli ...
in the west and
Heron Gate in the south. The towers from this era share an almost universal design, brick or concrete facades unadorned except for the large numbers of balconies given to each suite. With the general recession in the Canadian real estate market of the 1980s and early 1990s most such developments halted. In the early years of the 21st century residential high-rises have returned, mostly in the form of condominiums. Ottawa has not seen as extensive a boom in condo construction as Toronto or Vancouver, but several prominent structures have been built including the
Minto Metropole and a number of towers in the
Byward Market
The ByWard Market (), is a retail and entertainment district in the downtown core of Ottawa, Ontario, Canada. It is located east of the government and business district. The Market district includes the market buildings and open-air market alo ...
area.
The Briarcliffe section of the Rothwell Heights was a showcase for modernist domestic architecture in the early sixties, thanks to the influence of architects Walter Schreier, Brian Barkham,
James W. Strutt
James William Strutt (8 January 1924 – 8 November 2008) was a Canadian architect. Practising between 1950 and 1999 and working primarily in the Ottawa area, Strutt is noted for his role in the development of modern architecture in Canada fo ...
, Paul Schoeler and Matt Stankiewicz, as well as the area's proximity to the
National Research Council, a magnet for international talent.
New residential developments in Ottawa include nationally significant structures featuring a modern sensitivity toward energy efficiency and sustainability. The first certified
Passivehaus building designed and built in Canada for residential use was developed by Chris Straka of Vert Design Incorporated in 2010.
The duplex, constructed in
New Edinburgh
New Edinburgh is a neighbourhood in Rideau-Rockcliffe Ward, in Ottawa, Ontario, Canada. It is located to the northeast of the downtown core. It is bordered on the west by the Rideau River, to the north by the Ottawa River, to the south by Beec ...
adjacent to the Rideau River, demonstrates the integration of modern
sustainable architecture
Sustainable architecture is architecture that seeks to minimize the negative environmental impact of buildings through improved efficiency and moderation in the use of materials, energy, development space and the ecosystem at large. Sometimes, su ...
into one of the city's oldest neighbourhoods.
Commercial and industrial architecture

While the economy is dominated by the federal government, and service industries that support government workers, Ottawa has had several other important industries. Before becoming the capital,
Bytown
Bytown is the former name of Ottawa, Ontario, Canada. It was founded on September 26, 1826, incorporated as a town on January 1, 1850, and superseded by the incorporation of the City of Ottawa on January 1, 1855. The founding was marked by a sod ...
was a centre of the logging industry. The lumber industry remained prominent in Ottawa until the early twentieth century. The lasting legacy in Ottawa are the mansions and buildings constructed by the lumber barons who made up much of the economic elite of early Ottawa. Most notable was
John Rudolphus Booth, who commissioned several prominent structures from architect
John W.H. Watts. While the lumber and pulp mills disappeared from Ottawa in the early twentieth century, Hull across the river remained an important industrial centre and its waterfront was largely industrialized. Most of those factories have now disappeared, but a few remain. Including the
E. B. Eddy Company plant directly across from the Parliament Buildings. Ottawa itself does today have some industrial areas, mostly clustered around the rail lines in the Cyrville and Tanglewood areas south of the core. There is virtually no
heavy industry
Heavy industry is an industry that involves one or more characteristics such as large and heavy products; large and heavy equipment and facilities (such as heavy equipment, large machine tools, huge buildings and large-scale infrastructure); o ...
, and most of the industrial buildings are warehouses serving as transshipment points for goods made elsewhere.

In recent years it has been the
hi tech sector that has risen to prominence in Ottawa. Especially during the boom years of the 1990s Ottawa was often touted as "
Silicon Valley North
The National Capital Region (NCR) (, ), also known as Canada's Capital Region and Ottawa–Gatineau, is an official federal designation encompassing the Canadian capital of Ottawa, Ontario, the adjacent city of Gatineau, Quebec, and surroundin ...
", home to such firms as
Nortel
Nortel Networks Corporation (Nortel), formerly Northern Telecom Limited, was a Canadian Multinational corporation, multinational telecommunications and data networking equipment manufacturer headquartered in Ottawa, Ontario. It was founded in ...
,
Corel
Cascade Parent Limited, doing business as Alludo ( ), is a Canadian software company headquartered in Ottawa, Ontario, specializing in graphics processing. Formerly called the Corel Corporation ( ; from the abbreviation "Cowpland Research Laborat ...
,
JDS Uniphase
JDS Uniphase Corporation (JDSU) was an American company that designed and manufactured products for optical communications networks, communications test and measurement equipment, lasers, optical solutions for authentication and decorative applica ...
, and
Cognos
Cognos Incorporated was an Ottawa, Ontario-based company making business intelligence (BI) and performance management (PM) software. Founded in 1969, at its peak Cognos employed almost 3,500 people and served more than 23,000 customers in over ...
. This technology sector is almost wholly based in the western part of the city, especially around Kanata. Both Nortel and JDS Uniphase opted to build large compounds on the fringe of the city, while Corel has a series of towers by the Queensway. While the downturn severely hurt this industry, it has recovered in recent years with many smaller firms occupying office space in the west end.
Surviving commercial buildings from early Ottawa can be seen in some parts of downtown, most notably the heritage area along
Sussex Drive
Sussex Drive (), also known as Ottawa Regional Road93, is an arterial road in Ottawa, Ontario, the capital of Canada. It is one of the city's main ceremonial and institutional routes. Travelling roughly parallel to the Ottawa River, Sussex Drive ...
and the
Sparks Street pedestrian mall. These tend to be low stone structures densely clustered together. The vast majority of Ottawa's commercial buildings are similar to those that would be found anywhere in North America. Downtown Ottawa has several commercial streets, the most important being
Bank Street the lower levels of many office towers also contain shopping areas. One distinctive area is the
Byward Market
The ByWard Market (), is a retail and entertainment district in the downtown core of Ottawa, Ontario, Canada. It is located east of the government and business district. The Market district includes the market buildings and open-air market alo ...
, home to dozens of small shops and restaurants. The city has several shopping centres, the most central and prominent being the
Rideau Centre
The Rideau Centre () (corporately styled as CF Rideau Centre) is a three-level shopping centre on Rideau Street in Ottawa, Ontario, Canada. It borders on Rideau Street, the ByWard Market, the Rideau Canal, the Mackenzie King Bridge, and N ...
. The older suburbs each have central shopping malls, such as
Billings Bridge Plaza,
Bayshore Shopping Centre,
Carlingwood Mall. In recent years the newest suburbs have been home to large collections of
big-box store
A big-box store, a hyperstore, a supercenter, a superstore, or a megastore is a physically large retail establishment, usually part of a chain of stores. The term sometimes also refers, by extension, to the company that operates the store. The ...
s rather than traditional malls, with sprawling such complexes in Kanata, Barrhaven, and South Keys.
Architects
Architects who have played an important role in designing Ottawa structures include:
*
George Bemi, Ottawa Public Library Main Branch, St. Basil's Church,
ormerOttawa Congress Centre
*
Moses C. Edey,
Aberdeen Pavilion,
Daly Building
*
David Ewart
David Ewart, Imperial Service Order, ISO (18 February 1841 – 6 June 1921) was a Canadians, Canadian architect who served as Chief Dominion Architect from 1896 to 1914.
As chief government architect he was responsible for many of the federal bu ...
,
Royal Canadian Mint
The Royal Canadian Mint () is the mint of Canada and a Crown corporation, operating under an act of parliament referred to as the ''Royal Canadian Mint Act''. The shares of the mint are held in trust for the Crown in right of Canada.
The mi ...
,
Canadian Museum of Nature
The Canadian Museum of Nature (; CMN) is a national museums of Canada, national natural history museum based in Canada's National Capital Region (Canada), National Capital Region. The museum's exhibitions and public programs are housed in the Vi ...
,
Connaught Building
The Connaught Building is a historic office building in Ottawa, Ontario, Canada, owned by Public Services and Procurement Canada. It is located at 555 MacKenzie Avenue, just south of the United States Embassy. To the east, the building looks out o ...
*
Thomas Fuller
Thomas Fuller (baptised 19 June 1608 – 16 August 1661) was an English churchman and historian. He is now remembered for his writings, particularly his ''Worthies of England'', published in 1662, after his death. He was a prolific author, and ...
, original
Parliament of Canada
The Parliament of Canada () is the Canadian federalism, federal legislature of Canada. The Monarchy of Canada, Crown, along with two chambers: the Senate of Canada, Senate and the House of Commons of Canada, House of Commons, form the Bicameral ...
Centre Block
*
Raymond Moriyama
Raymond Junichi Moriyama (October 11, 1929 – September 1, 2023) was a Canadian architect.
The private practice in Toronto he co-founded with Ted Teshima, Moriyama & Teshima Architects, was renowned for designing many major buildings across ...
,
Ottawa City Hall and the
Canadian War Museum
The Canadian War Museum (CWM) () is a National museums of Canada, national museum on the military history of Canada, country's military history in Ottawa, Ontario, Canada. The museum serves as both an educational facility on Canadian military hist ...
*
W.E. Noffke,
Central Post Office,
Champagne Bath,
Ogilvy's
*
Moshe Safdie
Moshe Safdie (; born July 14, 1938) is an architect, urban planner, educator, theorist, and author. He is well known for incorporating principles of socially responsible design throughout his six-decade career. His projects include cultural, ed ...
, the
National Gallery of Canada
The National Gallery of Canada (), located in the capital city of Ottawa, Ontario, is Canada's National museums of Canada, national art museum. The museum's building takes up , with of space used for exhibiting art. It is one of the List of large ...
and
Old City Hall Old City Hall may refer to:
Asia
In Hong Kong
* Old City Hall (Hong Kong)
Europe
In Croatia
* Old City Hall (Zagreb)
In Denmark
* Old City Hall (1479–1728), in Copenhagen
* Old City Hall (1728–1795), in Copenhagen
* Old City Hall (Aalborg ...
*
Thomas Seaton Scott,
Cartier Square Drill Hall, Parliament's West Block
*
Francis Conroy Sullivan, a number of buildings inspired by
Frank Lloyd Wright
Frank Lloyd Wright Sr. (June 8, 1867 – April 9, 1959) was an American architect, designer, writer, and educator. He designed List of Frank Lloyd Wright works, more than 1,000 structures over a creative period of 70 years. Wright played a key ...
*John W.H. Watts,
Booth House,
Fleck/Paterson House,
Australia House
The High Commission of Australia in London is the diplomatic mission of Australia in the United Kingdom. It is located in Australia House, a Grade II listed building. It was Australia's first diplomatic mission and is the longest continuously ...
*Paul Schoeler of Schoeler & Heaton Architects,
Public Service Alliance of Canada Building.
*
James Strutt
James William Strutt (8 January 1924 – 8 November 2008) was a Canadians, Canadian architect. Practising between 1950 and 1999 and working primarily in the Ottawa area, Strutt is noted for his role in the development of modern architecture i ...
, Uplands Air Terminal Ottawa, Canadian Nurses Association Headquarters, LOEB Building for the Social Sciences Carleton University
Map
Below is a map of the National Capital Region showing the prominent buildings and structures. Click on the stars to read articles on the individual buildings.
See also
*
Architecture of Canada
*
List of buildings in Ottawa
*
List of tallest buildings in Ottawa-Gatineau
*
List of designated heritage properties in Ottawa
*
List of National Historic Sites of Canada in Ottawa
Notes
References
*Kalman, Harold and John Roaf ''Exploring Ottawa: an architectural guide to the nation's capital.'' . Toronto: University of Toronto Press, 1983.
*Kalman, Harold ''A History of Canadian Architecture.'' Toronto: Oxford University Press, 1994.
*''Ottawa: a guide to heritage structures'' City of Ottawa, Local Architectural Conservation Advisory Committee; managing editor, Lucy Corbin. 2001
*Fletcher, Katharine. ''Capital Walks: Walking Tours of Ottawa'', Markham, Ontario: Fitzhenry & Whiteside, 2004.
External links
Ottawa Regional Society of ArchitectsOttawa - Cityscapein ''The Canadian Encyclopedia''
{{DEFAULTSORT:Architecture Of Ottawa
Ottawa
Ottawa is the capital city of Canada. It is located in the southern Ontario, southern portion of the province of Ontario, at the confluence of the Ottawa River and the Rideau River. Ottawa borders Gatineau, Gatineau, Quebec, and forms the cor ...