Diefenbunker: Canada’s Cold War Museum

The Diefenbunker: Canada’s Cold War Museum is a once-top secret, four-storey underground bunker. Built between 1959 and 1961, the facility was originally designed as the centre for Canada’s defence against nuclear attack. The Diefenbunker is Canada’s most significant Cold War artifact, standing as a testament to the important role that Canada played during a critical period in recent world history.

Now a museum and national historic site, we have a crucial role to play in helping us to understand our past, present, and collective future. We offer a one-of-a-kind experiential learning environment, coupled with award-winning programs, events, and exhibitions. Step into history 75 feet underground and immerse yourself in stories of the past as you explore the depths of the Diefenbunker on a guided or self-guided tour or participate in the world’s largest escape room.

The Diefenbunker operates year-round as a museum and non-profit charitable organization, drawing visitors from around the world. We look forward to welcoming you underground.

Doors Open: Saturday, June 3, 2023. Tickets must be reserved in advance at Fareharbour - Doors Open or by calling 613-839-0007. Please arrive during the entry timeslot indicated on your ticket. There will be no guided tours offered, only self-guided exploration of the museum. Our free Audio Guide can be accessed on your own device using the museum’s Wi-Fi. Due to capacity, no walk-up visitors will be allowed entry. While admission is free, we welcome donations to support our museum and national historic site, as a not-for-profit organization

In-person visiting hours

*Follow building health protocols.

  • Saturday, June 3 2023
    10am to 4pm

Virtual and 3D Tours

*Some content may not be available in both official languages.

A white garage-style building with a large fallout shelter icon on the front is tucked into the grassy hillside.
Exterior entrance to the Diefenbunker, photo credit: The Diefenbunker.


Construction date or date range
Museums, archives and historic sites

Amenities and features

  • Public washrooms
  • Free parking
  • Bike parking
  • Family friendly