Doors Open Ontario

Doors Open Ontario had another successful season! Nearly 500,000 people visited sites in communities across the province. Thanks to our sponsors, partners and volunteers for their support, and to all who participated. Stay tuned for information about next season …

Diefenbunker: Canada's Cold War Museum Doors Open Ottawa

Diefenbunker: Canada's Cold War Museum

The Diefenbunker: Canada’s Cold War Museum is a four-storey Cold War bunker built to protect the government from a nuclear attack on Ottawa. Once top-secret, this underground facility is now open year-round. Free 30-minute tours in French and English by reservation only. Please visit in early May to reserve your space.

Tell us your story about this site

  • Parking
  • Full wheelchair access
  • Washrooms
  • National Historic Site (Canada)
  • Kid-friendly
  • Guided tours available

Contact info

3929 Carp Road
Carp, Ontario
Telephone: 613-839-0007


Year built: 1959-61
Building type: Attraction, Historical landmark, Museum

Dates/hours open

Saturday June 1 – Sunday June 2, 2019
Saturday and Sunday: 10 a.m. to 4 p.m.

Diefenbunker: Canada's Cold War Museum 3929 Carp Road