Langevin Block

The Langevin Block is an office building facing Parliament Hill in Ottawa, Canada. As the home of the Privy Council Office and Office of the Prime Minister, it is the working headquarters of the executive branch of the Canadian government. Accordingly, the term Langevin Block is sometimes used as a metonym for the Prime Minister's Office.

While the offices of senior Privy Council Office officials remain in the Langevin Block, its use is now largely limited to the Prime Minister's Office, where the Prime Minister maintains his personal office, in addition to his office in the Centre Block of the parliament buildings. Started in 1884 and completed in 1889 the block was the first federal government office building constructed outside the Parliament Hill precinct. It is built of sandstone obtained from a New Brunswick quarry owned by Charles Elijah Fish. It occupies a prominent place on Ottawa's Wellington Street, adjacent to the National War Memorial, Chateau Laurier, Government Conference Centre, Rideau Canal, National Arts Centre, High Commission of the United Kingdom in Ottawa, and the Sparks Street Mall. Originally named the Southwest Departmental Building, its current name comes from Sir Hector-Louis Langevin, the Public Works Minister in the Cabinet of Sir John A. Macdonald. The structure is distinctive in Ottawa for its Second Empire Style design, when most government buildings from the period were in Gothic Revival style. It was designed by Chief Dominion Architect Thomas Fuller, who also did the original Parliament Buildings. In 2000, it was named by the Royal Architectural Institute of Canada as one of the top 500 buildings produced in Canada during the last millennium.

Langevin Block National Historic Site of Canada The Langevin Block Province Ontario Original use Offices of the departments of Agriculture, Interior, Indian Affairs and the Post Office Current use Office of the Prime Minister and the Privy Council Office Administrative body Public Works and Government Services Canada Other designations Classified Federal Heritage Building Year built 1884-1889 Website The Langevin Block from Yesterday to Today


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