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Explore Canada's Cold War Museum

Descend into history, 75 feet underground.

Diefenbunker exterior with yellow flowers on the hillside in front of it.

Built for the end, preserved for the future.

Experience Ottawa’s immersive history destination. This impressive four-storey underground Cold War communications headquarters is now a one-of-a-kind museum and national historic site.

The Diefenbunker is a window into the past, bringing history to life through award-winning exhibitions, tours, programs, events, and escape rooms — there is something for everyone. Connect with Cold War history and discover unforgettable experiences.

Descend into history, 75 feet underground

Show your support

Operating year-round as an independent charitable organization, the Diefenbunker is preserving important Canadian Cold War stories and artifacts. We value the history that happened here and offer a unique platform to understand our past, for present and future generations to strive to build a more peaceful future.

Your support is crucial so that we can continue to inform and inspire you through lessons learned from the Cold War.

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