The Office of the Prime Minister and Privy Council () building, formerly known as the Langevin Block (, ), is an
office building
An office is a space where the employees of an organization perform administrative work in order to support and realize the various goals of the organization. The word "office" may also denote a position within an organization with specific du ...
facing
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 ...
in
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 ...
,
Ontario
Ontario is the southernmost Provinces and territories of Canada, province of Canada. Located in Central Canada, Ontario is the Population of Canada by province and territory, country's most populous province. As of the 2021 Canadian census, it ...
, Canada. As the home of the
Privy Council Office and
Office of the Prime Minister, it is the working
headquarters
Headquarters (often referred to as HQ) notes the location where most or all of the important functions of an organization are coordinated. The term is used in a wide variety of situations, including private sector corporations, non-profits, mil ...
of the
executive branch
The executive branch is the part of government which executes or enforces the law.
Function
The scope of executive power varies greatly depending on the political context in which it emerges, and it can change over time in a given country. In ...
of the
Canadian government
The Government of Canada (), formally His Majesty's Government (), is the body responsible for the federal administration of Canada. The term ''Government of Canada'' refers specifically to the executive, which includes ministers of the Crown ( ...
.
The term Langevin Block was previously used as a
metonym
Metonymy () is a figure of speech in which a concept is referred to by the name of something associated with that thing or concept. For example, the word "wikt:suit, suit" may refer to a person from groups commonly wearing business attire, such ...
for the Prime Minister's Office and the Privy Council Office. The building was named after
Father of Confederation
The Fathers of Confederation are the 36 people who attended at least one of the Charlottetown Conference of 1864 (23 attendees), the Quebec Conference of 1864 (33 attendees), and the London Conference of 1866 (16 attendees), preceding Canadian ...
and cabinet minister
Hector-Louis Langevin
Sir Hector-Louis Langevin, (August 25, 1826 – June 11, 1906) was a Canadian lawyer, politician, and one of the Fathers of Confederation.
Early life and education
Langevin was born in Quebec City in 1826. He studied law and was called to ...
.
Recognizing Langevin's role in establishing the
residential school system, associated with the abuse of Indigenous children and attempts to forcibly assimilate them, Prime Minister
Justin Trudeau
Justin Pierre James Trudeau (born December 25, 1971) is a Canadian politician who served as the 23rd prime minister of Canada from 2015 to 2025. He led the Liberal Party from 2013 until his resignation in 2025 and was the member of Parliament ...
announced the renaming of the building on June 21, 2017.
The building is a
National Historic Site of Canada
National Historic Sites of Canada () are places that have been designated by the federal Minister of the Environment on the advice of the Historic Sites and Monuments Board of Canada (HSMBC), as being of national historic significance. Parks C ...
.
Description

It is built of
sandstone
Sandstone is a Clastic rock#Sedimentary clastic rocks, clastic sedimentary rock composed mainly of grain size, sand-sized (0.0625 to 2 mm) silicate mineral, silicate grains, Cementation (geology), cemented together by another mineral. Sand ...
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
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 ...
,
National Arts Centre
The National Arts Centre (NAC) () is a Arts centre, performing arts organization in Ottawa, Ontario, along the Rideau Canal. It is based in the eponymous National Arts Centre (building), National Arts Centre building.
History
The NAC was one ...
,
High Commission of the United Kingdom in Ottawa, and the
Sparks Street Mall.
The structure is distinctive in Ottawa for its
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 ...
design because most government buildings from the period were built in the
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 ...
style. It was designed by the Chief Dominion Architect
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 ...
, who also designed the original Parliament Buildings. In 2000, it was named by the
Royal Architectural Institute of Canada
The Royal Architectural Institute of Canada (RAIC) is a not-for-profit, national organization that has represented architects and architecture for over 100 years, in existence since 1907. The RAIC is the leading voice for excellence in the built ...
as one of the top 500 buildings produced in Canada during the last millennium.
The building is connected by a bridge to an office building at 13 Metcalfe Street.
While the offices of senior Privy Council Office officials remain in the building, its use is now largely limited to the Prime Minister's Office, in addition to his or her office in the Centre Block of the Parliament Buildings. The Prime Minister of Canada has two office rooms.
History
Started in 1883 and completed in 1889, the building was the first federal government office building constructed outside the Parliament Hill precinct. Originally named the Southwest Departmental Building during construction, its name from completion until 2017 came from
Sir Hector-Louis Langevin, the Public Works Minister in the
Cabinet of
Sir John A. Macdonald.
The building was first used by the departments of Agriculture, Interior, Indian Affairs and the Post Office. It was used by the Department of Indian Affairs until 1965. The building was renovated between 1975 and 1977 and has been used since by the Prime Minister’s Office and the Privy Council.
In 1977, it was designated a National Historic Site. This was to recognize Fuller's work, its example as a Department of Public Works architecture, and its Second Empire style.
In 2017, the
Assembly of First Nations called for the building to be renamed, largely based on Langevin's role in the creation of Canada's controversial
Indian residential schools system.
[ On June 21, 2017 the building was renamed the Office of the Prime Minister and Privy Council.
]
See also
* List of designated heritage properties in Ottawa
References
Additional reading
*
*
External links
The Langevin Block from Yesterday to Today
Office of the Prime Minister and Privy Council
Canada's Historic Places
{{NHSC
Office of the Prime Minister (Canada)
King's Privy Council for Canada
Federal government buildings in Ottawa
Second Empire architecture in Canada
Sandstone buildings in Canada
Thomas Fuller buildings
National Historic Sites in Ontario
Buildings and structures on the National Historic Sites of Canada register
Designated heritage properties in Ottawa
Classified Federal Heritage Building
1889 establishments in Ontario
Government buildings completed in 1889