There are six other National Historic Sites located within the National Capital Region, but not within Ottawa proper: the Former Almonte Post Office and Rosamond Woollen Mill in Almonte, the Gillies Grove and House in Arnprior, the Manoir Papineau in Montebello, the Symmes Hotel in the Aylmer sector of Gatineau, and the First Geodetic Survey Station in Chelsea.
Numerous National Historic Events also occurred in Ottawa, and are identified at places associated with them, using the same style of federal plaque which marks National Historic Sites. Several National Historic Persons are commemorated throughout the city in the same way. The markers do not indicate which designation—a Site, Event, or Person—a subject has been given. National Historic Sites located elsewhere in Ontario are listed at National Historic Sites in Ontario.
This list uses names designated by the national Historic Sites and Monuments Board, which may differ from other names for these sites.
The only large-scale exhibition building in Canada surviving from the 19th century, and also the oldest surviving venue in which the Stanley Cup was contested
An exceptional example of 19th-century cemetery design, containing a concentration of mausolea, monuments, and markers of significant importance to the history of Canada, Ontario and Ottawa; the cemetery was declared the national cemetery of Canada in 2009. It has served as the national military cemetery since 1944 and the RCMP's national memorial cemetery since 2004.
One of Canada's landmark railway hotels, built in the distinctly Canadian Château-style; dubbed the "Third Chamber of Parliament" due to its proximity to Parliament Hill
A testament to Wilfrid Laurier’s commitment to enhance the architecture in Canada's capital; one of the best works of David Ewart, the Chief Dominion Architect from 1896 to 1914
An underground 4-storey bunker, capable of withstanding a near-hit from a nuclear explosion, built to shelter key Canadian political and military personnel in the event of a nuclear war, now a museum
The home of the Public Archives of Canada from 1906 to 1967, and the Canadian War Museum from 1967 to 2005, this building was constructed as part of Prime Minister Sir Wilfrid Laurier’s efforts to transform Ottawa from a lumber town into a capital city with requisite cultural and civic amenities and architecture
Among the oldest government buildings in the capital, the building was the first Ottawa home of the Geological Survey of Canada; the building was also used to host the inaugural exhibit of the Canadian Academy of Arts in 1880 (the genesis of the collection of the National Gallery of Canada), and to display the Geological Survey's museum collections (which served as the foundation of the Canadian Museum of Nature)
Built in 1959, Hart Massey House is an iconic example of mid-20th century modernism in residential architecture, and an example of International style because of its sensitivity to its natural surroundings.
One of the finest examples of Second Empire style office building architecture in Canada, the Langevin Block was the first purpose-built office building erected by the federal government outside the boundaries of Parliament Hill; currently serves as home to the Prime Minister's Office and the Privy Council Office
A rare example of an early 19th-century country estate in Canada and an excellent example of the British classical style; the gardens are the best preserved of the few surviving examples of 19th-century walled gardens in Canada
Built to commemorate the Canadian Centennial and designed in the shape of hexagons, the centre heralded Canada's cultural and architectural achievements in the second half of the 20th century; also a component of the Confederation Square National Historic Site of Canada
The seat of the Parliament of Canada in a striking location on a hill above the Ottawa River; an important symbol serving as the physical embodiment of the Canadian government and federation
The focal point for national celebrations in Ottawa; the grounds were originally designed by Calvert Vaux, and since supplemented by 18 monuments and memorials
Built for the British government by Lieutenant-Colonel John By as a defensive work in the event of war with the United States, the still-functioning canal is the best preserved example of a 19th-century slack water canal in North America, with most of its original structures intact; a World Heritage Site and a unique historic landmark in the central core of Ottawa
Representative of the federal government's approach to using the Tudor Gothic architectural style to create a distinctive identity in Canada's capital; the construction of this building, combining a mint and a refinery for gold produced by Canadian mines, symbolized the patriation of control over Canada's currency from Britain
The Fairmont Château Laurier is a 660,000-square-foot (61,000 m2) hotel with 429 guest rooms in the downtown core of Ottawa, Ontario, Canada, located near the intersection of Rideau Street and Sussex Drive and designed in a French Gothic Revival Châteauesque style to complement the adjacent Parliament buildings. The hotel is above the Colonel By Valley, home of the Ottawa Locks of the Rideau Canal, and overlooks the Ottawa River. The main dining room overlooks Major's Hill Park. The reception rooms include the Wedgewood-blue Adam Room; the Laurier Room defined by Roman columns; the Empire-style ballroom and the Drawing Room featuring cream and gold plaster ornament. The hotel was designated a national historic site in 1980.
The Plaza Bridge in Ottawa, Ontario, Canada, is an automotive and pedestrian bridge that crosses the Rideau Canal just south of the Ottawa locks. It joins Wellington Street and Elgin Street in the Downtown core to the west with Rideau Street to the east. The Chateau Laurier abuts the bridge at the east end, while Parliament Hill is just beyond the west end. It is the northernmost bridge over the canal, just north of the Mackenzie King Bridge.
Confederation Square is an urban square in Ottawa, Ontario, Canada, and is considered the second most important ceremonial centre in Canada's capital city, after Parliament Hill. Roughly triangular in area, with Canada's National War Memorial at its centre and the Valiants Memorial at its periphery, the square is bounded by Wellington Street to the north and branches of Elgin Street to the east and west.
References
↑ Ottawa, Carp, Directory of Designations of National Historic Significance of Canada
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). [2] The Rideau Canal, which extends to Lake Ontario at Kingston, was designated in 1925 and was the first site designated in Ottawa. [3] 
