Explore Canada's Cold War Museum
Descend into history, 75 feet underground.
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.
