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Notre-Dame Roman Catholic Basilica National Historic Site of Canada

375 Sussex Drive, Ottawa, Ontario, K1N, Canada

Formally Recognized: 1990/02/23

General view of Notre-Dame Roman Catholic Basilica, showing the twin-towered façade with large west window, 1989.; Parks Canada Agency / Agence Parcs Canada, W. Duford, 1989.
General view
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Other Name(s)

Notre-Dame Roman Catholic Basilica
Basilique catholique Notre-Dame
Notre-Dame Cathedral of Bytown
Cathédrale Notre-Dame de Bytown
Notre-Dame Cathedral of Ottawa
Cathédrale Notre-Dame d'Ottawa
Notre-Dame Roman Catholic Basilica National Historic Site of Canada

Links and documents

Construction Date(s)

1842/01/01 to 1897/01/01

Listed on the Canadian Register: 2009/04/29

Statement of Significance

Description of Historic Place

Notre Dame Roman Catholic Basilica National Historic Site of Canada is a large Gothic Revival cathedral, built of ashlar limestone, whose twin towers mark the entrance to Lowertown, one of Ottawa’s earliest neighbourhoods. It is prominently located on Sussex Drive, between St. Patrick and Guigues streets, across from the National Gallery of Canada, in Ottawa’s Lowertown area. As the physical and spiritual centre of Ottawa’s Catholic community, the cathedral is flanked on its south side by the Archbishop’s Palace and on its north side by the former College of Bytown and the Mother House of the Grey Nuns. The formal recognition consists of the cathedral on its legal property at the time of designation.

Heritage Value

Notre-Dame Roman Catholic Basilica was designated a national historic site of Canada in 1990 because:
- it is an exceptional example of the Gothic Revival style in Canadian architecture.

The basilica’s heritage value is carried by its design, materials, and interior decoration and craftsmanship. In its design and construction, Notre-Dame Roman Catholic Basilica integrates classicism, Quebec church architecture and the French Gothic Revival style. It is notable for the continuity of design throughout the entire structure, despite its numerous renovations and additions. It is also notable for its interior finishes, decoration, artwork and embellishments. It is enhanced by its ecclesiastic precinct as well as by its significant role as a landmark in the nation’s capital.

The original neoclassical design of the church was begun in 1842 under parish priest Jean-François Cannon and altered in 1843 to plans prepared by Jesuit priest Félix Martin. In 1844, the partially built structure was transformed to the Gothic Revival style under Oblate priests Adrien Telmon and Damase Dandurand. The steeples were added in 1858 to designs by Dandurand. In 1862-3 an apse was built in the Gothic Revival style to designs by Montréal priest-architect Victor Bourgeau. The interior decoration was substantially completed in the late-19th century and includes work by major artists, including 19th-century contributions by Québec sculptor Philippe Hébert and stained-glass artist Harwood, and a series of stained glass windows executed in the 1960s by Guido Ninchieri. It also houses an organ made by Joseph Casavant.

Sources: Historic Sites and Monuments Board of Canada, Minutes, June 1990, June 1999.

Character-Defining Elements

Key elements contributing to the heritage value of this site include:
- its location, facing Sussex Drive;
- viewscapes to and from the building across Sussex Drive;
- those elements illustrating its Gothic Revival style such as its rectangular massing on an east-west axis, its fine stone construction, its vertical emphasis externally and internally, Gothic Revival style detailing such as pointed-arch openings and tall, slender steeples, and buttresses;
- those elements illustrating the influence of the specifically French Gothic Revival style including the twin-towered façade with large west window, its plan and elevation including a tall nave, clerestory, side aisles, generously scaled sanctuary and curved apse;
- the surviving evidence of the decorative programs of Dandurand, Bourgeau and Bouillon including the altarpieces and side altars, use of stained glass, the polychrome colour scheme including the brilliant jewel-like polychrome painting and gilding of the interior, and the wood and plaster-carved sculptural figures in the Québec tradition by artists such as Louis-Philippe Hébert, Philippe Pariseau and Flavien Rochon;
- the series of stained-glass windows executed by Guido Nincheri;
- the organ in its original placement and remnants of its original fabric;
- the continuity of design carried through all renovations and additions to the original building;
- its skilled craftsmanship, evident throughout the exterior and interior of the building;
- the gilded statue of the Virgin and Child on the peak of the roof.




Recognition Authority

Government of Canada

Recognition Statute

Historic Sites and Monuments Act

Recognition Type

National Historic Site of Canada

Recognition Date


Historical Information

Significant Date(s)

1844/01/01 to 1858/01/01
1862/01/01 to 1863/01/01
1874/01/01 to 1891/01/01
1897/01/01 to 1897/01/01
1933/01/01 to 1933/01/01

Theme - Category and Type

Expressing Intellectual and Cultural Life
Architecture and Design

Function - Category and Type


Religion, Ritual and Funeral
Religious Facility or Place of Worship


Architect / Designer

Father Jean-François Cannon



Additional Information

Location of Supporting Documentation

National Historic Sites Directorate, Documentation Centre, 5th Floor, Room 89, 25 Eddy Street, Gatineau, Quebec.

Cross-Reference to Collection

Fed/Prov/Terr Identifier




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