Ottawa became Canada's capital in 1857 when Queen Victoria selected it to resolve disputes between Toronto and Montreal, both of which had served as capitals of the Province of Canada. The city sits at the confluence of the Ottawa River, Gatineau River, and Rideau River in southeastern Ontario, directly across from Gatineau, Quebec. The Ottawa River forms the provincial boundary between Ontario and Quebec at this point. The metropolitan population reached 1,488,307 according to the 2021 census, making it the fourth-largest urban area in Canada after Toronto, Montreal, and Vancouver.
Parliament Hill occupies a limestone bluff overlooking the Ottawa River. The Centre Block, which houses the House of Commons and Senate chambers, burned in 1916 and was rebuilt by 1922. The Peace Tower rises 92.2 metres above the Centre Block and contains a 53-bell carillon. The East Block, completed in 1865, and West Block, completed in 1866, flank the Centre Block and contain offices for parliamentarians and staff. The Library of Parliament, completed in 1876, survived the 1916 fire because an iron door was closed during the blaze. The building features a 16-sided polygonal design with flying buttresses. From 2019 to 2031, the Centre Block is closed for rehabilitation work, with the House of Commons temporarily relocated to the West Block and the Senate to the former Government Conference Centre.
The Rideau Canal connects Ottawa to Kingston, Ontario, covering 202 kilometres through a series of lakes, rivers, and constructed sections. Colonel John By of the Royal Engineers supervised construction from 1826 to 1832, originally intended as a military supply route following the War of 1812. The waterway contains 47 locks, with 24 locks operating within the Ottawa region. UNESCO designated the canal a World Heritage Site in 2007. During winter months, a 7.8-kilometre section through central Ottawa becomes a skating surface, claimed by the Guinness Book of World Records in 2005 as the largest naturally frozen ice rink, though the title is disputed based on definitions of "rink."
The National Capital Region extends beyond Ottawa city limits to include Gatineau and surrounding municipalities in both Ontario and Quebec, encompassing 4,715 square kilometres. The National Capital Commission, established by Parliament in 1959, manages federal lands and coordinates planning across this region, controlling approximately 473 square kilometres of land. Gatineau Park, administered by the commission, covers 361 square kilometres in the Gatineau Hills north of Ottawa and contains more than 165 kilometres of trails. The commission also maintains ceremonial routes, parkways, and green spaces including the Rideau Hall grounds and official residences.
Byward Market occupies several blocks east of Parliament Hill, operating since 1826 when Colonel By established it to serve canal construction workers. The market building at 55 Byward Market Square dates to 1927. The area contains approximately 260 shops, restaurants, and galleries within four city blocks bounded by George Street, York Street, Dalhousie Street, and King Edward Avenue. William Street, running through the market's center, restricts vehicle access during peak hours. The market operates year-round with outdoor vendors selling produce, crafts, and flowers from April through November.
The ByTown Museum, located in Ottawa's oldest stone building, occupies the 1827 Commissariat constructed to store materials for Rideau Canal construction. The museum contains approximately 15,000 artifacts related to Ottawa's history, including Colonel By's personal effects and tools used in canal construction. The building sits immediately adjacent to the lowest lock station of the Rideau Canal at the Ottawa River confluence. Ottawa's original name, Bytown, honored Colonel John By until the city was incorporated as Ottawa in 1855.
Confederation Boulevard forms a 19-kilometre ceremonial route connecting landmarks across both Ottawa and Gatineau. White terracotta markers embedded in sidewalks trace the route, which passes Parliament Hill, the Supreme Court of Canada, the National Gallery of Canada, the Canadian Museum of History, and Rideau Hall. The National Capital Commission established this route in 1992 during Canada's 125th anniversary celebrations.
The Supreme Court of Canada building, completed in 1939, faces the Ottawa River at 301 Wellington Street. Montreal architect Ernest Cormier designed the Art Deco structure using Quebec limestone. The court moved to this purpose-built structure from its previous location in Parliament's Victoria Memorial Museum Building. The building contains two courtrooms, though the nine justices typically hear cases in the larger main courtroom. Public access to courtroom proceedings is available when court is in session, typically from October through June.
Rideau Hall, at 1 Sussex Drive, serves as the official residence of the monarch's representative in Canada, currently the Governor General. The limestone villa was constructed in 1838 for stonemason Thomas McKay. The federal government purchased the property in 1868 for use as the Governor General's residence, with the first resident being Viscount Monck. The grounds cover 32 hectares and contain formal gardens, wooded areas, and a cricket pitch. The Changing of the Guard ceremony occurs on the front lawn Saturday mornings during summer months, weather permitting.
24 Sussex Drive, located 700 metres north of Rideau Hall, served as the official residence of the Prime Minister from 1951 until 2015, when structural deterioration made it unsuitable for occupancy. Prime Minister Louis St. Laurent first occupied the mansion. The building remains vacant as of 2025, with various renovation plans proposed but not implemented. Prime Minister Justin Trudeau has resided at Rideau Cottage on the Rideau Hall grounds since taking office in 2015.
The National Gallery of Canada occupies a glass and granite building designed by Moshe Safdie, opened in 1988 at 380 Sussex Drive. The museum's collection contains over 75,000 works, with particularly strong holdings in Canadian, Indigenous, and European art. The gallery owns the largest collection of works by Group of Seven members including Tom Thomson, Lawren Harris, and A.Y. Jackson. The Great Hall features panoramic views of Parliament Hill and the Ottawa River through floor-to-ceiling windows. The Tarot Garden Chapel, designed by artist Niki de Saint Phalle, was relocated from France and installed permanently in the gallery in 2003.
The Canadian Museum of Nature occupies the Victoria Memorial Museum Building at 240 McLeod Street, completed in 1910 as Canada's first purpose-built museum. The Tudor Gothic Revival structure served as the temporary home of Parliament after the 1916 Centre Block fire until 1920. The museum contains approximately 14 million specimens across its natural history collections, including the skeleton of a blue whale measuring 24 metres, displayed in the Water Gallery. The building's tower was removed in 1915 due to structural concerns with the underlying clay soil and replaced with a contemporary glass lantern in 2010.
The Canadian Museum of History, across the Ottawa River in Gatineau at 100 Laurier Street, opened in 1989 in a building designed by Douglas Cardinal featuring curved walls meant to evoke the Canadian landscape. Before rebranding in 2013, it operated as the Canadian Museum of Civilization. The Grand Hall displays totem poles and Indigenous structures spanning six coastal British Columbia First Nations. The Canadian History Hall, which opened in 2017, traces 15,000 years of human history in Canada through 1,500 artifacts displayed across 4,000 square metres. The museum attracted 1.2 million visitors in 2019, making it one of Canada's most visited museums.
The Canadian War Museum, at 1 Vimy Place in LeBreton Flats, opened in its current building in 2005, designed by Raymond Moriyama. The structure covers 14,000 square metres and contains four main exhibition halls chronicling Canadian military history from pre-contact warfare to contemporary peacekeeping operations. The collection includes more than 500,000 artifacts, with large objects such as artillery pieces, vehicles, and aircraft. On November 11 at 11:00 AM each year, sunlight shines through a window to illuminate the headstone of Canada's Unknown Soldier, a design feature built into the architecture.
Major's Hill Park, one of Ottawa's oldest parks, provides green space between the Rideau Canal and Parliament Hill. The park occupies land originally owned by Colonel By, who built his residence here. The federal government acquired the property in 1856. The park hosts various festivals including Ottawa Bluesfest and Canadian Tulip Festival events. Colonel By's grave is located in Beechwood Cemetery, five kilometres north of downtown at 280 Beechwood Avenue, where he was reinterred in 2011 after his remains were returned from England.
Gatineau, with a population of 291,041 according to the 2021 census, ranks as Quebec's fourth-largest city. Hull, the urban core of Gatineau facing Ottawa across the river, was amalgamated with four other municipalities in 2002 to form present-day Gatineau. The Alexandra Bridge, opened in 1901, connects Wellington Street in Ottawa to Laurier Street in Gatineau. The Portage Bridge, built in 1973, carries six lanes of traffic between Ottawa and Gatineau. The Prince of Wales Bridge, a rail bridge completed in 1880, last carried train traffic in 2001 and is proposed for conversion to pedestrian and cycling use.
The University of Ottawa, founded in 1848 by the Missionary Oblates of Mary Immaculate as the College of Bytown, is Canada's largest bilingual university with instruction in English and French. The main campus covers approximately 35 hectares in the Sandy Hill neighborhood. Enrollment reached 42,027 students in 2021. The university's origins make it Ontario's oldest post-secondary institution. Carleton University, established in 1942, occupies a 62-hectare campus along the Rideau River in the south end of Ottawa. Enrollment totaled 31,266 students in 2021.
Elgin Street, running south from Wellington Street near Parliament Hill, contains the National Arts Centre at 1 Elgin Street, which opened in 1969. The performing arts complex includes four stages: Southam Hall seating 2,326, the Theatre seating 897, Azrieli Studio seating 300, and the outdoor Fourth Stage. The National Arts Centre Orchestra, founded in 1969, performs approximately 120 concerts per season. Architect Fred Lebensold designed the brutalist structure featuring hexagonal geometric patterns. A 2017 renovation added glass walls and incorporated Indigenous architectural elements.
The Ottawa Senators NHL franchise plays at Canadian Tire Centre, located 26 kilometres west of downtown in Kanata at 1000 Palladium Drive. The arena, which opened in 1996, seats 18,652 for hockey. Ottawa's original NHL Senators franchise operated from 1917 to 1934, winning the Stanley Cup four times. The current franchise began play in 1992. Ottawa Redblacks of the Canadian Football League play at TD Place Stadium at Lansdowne Park, 800 Bank Street, which seats 24,000. The stadium opened in 1908 as Lansdowne Park, was demolished and rebuilt in 2014.
Sparks Street became Canada's first permanent pedestrian mall in 1966, spanning three blocks between Elgin Street and Bank Street. The street contained Ottawa's primary commercial district in the late 19th and early 20th centuries. The transformation to a pedestrian thoroughfare occurred amid declining retail activity as suburban shopping centers emerged. The mall underwent significant redesign in 2017-2018. Approximately 120 shops and restaurants operate along this section, though vacancy rates have fluctuated between 20 and 30 percent in recent years.
Winterlude, an annual winter festival, has occurred each February since 1979, spanning three weekends. Activities center on the Rideau Canal Skateway, Confederation Park, and Jacques-Cartier Park in Gatineau. Ice sculptures displayed during the festival include entries in an international competition. The 2019 festival attracted approximately 600,000 visitors across the three-week period. The Canadian Tulip Festival, held each May since 1953, originated from a gift of 100,000 tulip bulbs from the Netherlands in 1945 as gratitude for sheltering Princess Juliana during World War II. The Dutch royal family continues to send 20,000 bulbs annually. The 2019 festival displayed over one million tulips across Commissioner's Park and other city locations.
The Canadian Tulip Festival's origins connect directly to wartime events. Princess Juliana took refuge in Ottawa from 1940 to 1945, and her daughter Princess Margriet was born at Ottawa Civic Hospital in 1943. The Canadian government temporarily declared her maternity suite extraterritorial to ensure the princess would derive citizenship solely from her mother, as Dutch law required. After the war, the Netherlands sent the initial tulip gift, establishing an annual tradition.
The Diefenbunker, located 30 kilometres west of downtown in Carp at 3929 Carp Road, is a four-story underground bunker constructed from 1959 to 1961 to house Canadian government officials in the event of nuclear war. Prime Minister John Diefenbaker authorized the construction, which occurred in secrecy under the cover story of building communications facilities. The facility could shelter 535 people for 30 days. It operated as a government facility until 1994, when the Department of National Defence declared it surplus. The site opened as Canada's Cold War Museum in 1998, displaying original equipment and living quarters.
Rockcliffe Park, a neighborhood three kilometres northeast of Parliament Hill, contains several official residences and embassy properties. 7 Rideau Gate serves as the official guest house for visiting dignitaries. 24 Sussex Drive and Rideau Hall are both located within or adjacent to Rockcliffe Park. The neighborhood's proximity to government institutions and restricted development have maintained low housing density despite high property values. The former Rockcliffe Village incorporated separately from Ottawa in 1926 but was amalgamated into Ottawa in 2001.
The Royal Canadian Mint's Ottawa facility, at 320 Sussex Drive, opened in 1908 to produce Canadian coinage domestically rather than relying on Britain's Royal Mint. The Sussex Drive location ceased producing circulation coins in 1975 when a new facility opened in Winnipeg, but continues to manufacture numismatic and commemorative coins, gold bullion, and medals. The building, designed in the Tudor Gothic style by Canadian architect David Ewart, offers guided tours showing the production of hand-crafted collector coins. The Mint operates as a Crown corporation, selling its products internationally.
Lansdowne Park, at Bank Street and Queen Elizabeth Driveway, has hosted exhibitions, sports, and events since 1868. The Aberdeen Pavilion, built in 1898, is one of North America's few surviving 19th-century exhibition halls featuring a metal frame structure. The building measures 108 metres long and 60 metres wide, covering 6,480 square metres under a single span. The Horticulture Building, constructed in 1914, displays Edwardian architecture and now functions as an event space. The entire Lansdowne site underwent redevelopment from 2010 to 2015, adding residential buildings, retail space, and the rebuilt stadium.
The Ottawa River rises from Lac des Outaouais in Quebec's Laurentian Mountains and flows 1,271 kilometres to its confluence with the St. Lawrence River at Montreal. The river drains a watershed covering 146,300 square kilometres across Ontario and Quebec. At Ottawa, the river is approximately 1.5 kilometres wide. The Chaudière Falls, located three kilometres upstream from Parliament Hill at the heart of the city, drops 15 metres. These falls held spiritual significance for the Algonquin peoples, who called the location Akikodjiwan, meaning "kettle." Hydroelectric development has significantly altered the falls since the 19th century, with most water now diverted through generating stations.
Rideau Falls, where the Rideau River empties into the Ottawa River, drops 11 metres in two parallel curtains divided by an island, creating the illusion of a curtain, which "rideau" means in French. The falls provided the name for the river, canal, and other local features. Samuel de Champlain observed these falls in 1613 during his exploration of the Ottawa River. A lookout at Green's Creek provides viewing access. The falls generate hydroelectric power through a facility operated by Hydro Ottawa.
The O-Train, Ottawa's light rail rapid transit system, consists of two lines as of 2025. The Confederation Line (Line 1) runs 12.5 kilometres east-west through downtown, opened in 2019 with 13 stations. The line extends underground through downtown between Blair and Tunney's Pasture stations. The Trillium Line (Line 2) runs 7.5 kilometres north-south, operating since 2001 as North America's first modern diesel light rail line. Rideau station, where Line 1 intersects with Rideau Street, sits directly adjacent to Rideau Centre shopping mall and the Fairmont Château Laurier hotel. Persistent reliability issues with Line 1's trains and signaling systems have created service disruptions since opening.
The Fairmont Château Laurier opened in 1912 at 1 Rideau Street, designed by Montreal architects Ross and MacFarlane in the French Gothic Revival château style. Charles Melville Hays, Grand Trunk Railway president who commissioned the hotel, died on the RMS Titanic in April 1912, two months before the hotel's opening. The building contains 429 guest rooms and covers an entire city block. The limestone structure features turrets, gargoyles, and a copper roof that has oxidized to green. Expansion proposals announced in 2016 generated significant public opposition due to contemporary architectural designs that critics argued clashed with the original château style.