Doors Open Ontario

While this site has participated in Doors Open Ontario in the past, it is not part of the current season’s program. Please check the Home page for this year’s events and participating sites.

Connaught Doors Open Ottawa


Built in modified Norman style and designed by David Ewart, Connaught opened in 1915 and was named after the Duke of Connaught, third son of Queen Victoria and Governor General of Canada 1911-16. Designated as a classified federal heritage building primarily for its architectural significance, the structure is considered to be the Crown jewel of the Canada Revenue Agency.

Tell us your story about this site

  • Full wheelchair access
  • Guided tours available

Contact info

555 Mackenzie Avenue
Ottawa, Ontario


Year built: 1915
Architect: David Ewart
Building type: Government building, Historical landmark

Dates/hours open

Saturday June 6 – Sunday June 7, 2020
Saturday and Sunday: 10 a.m. to 4 p.m.

Connaught 555 Mackenzie Avenue