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.
World Juniors hockey-goers receive 15% off general admission
As the Diefenbunker is conveniently located down the road from the Canadian Tire Centre, we welcome fans attending the IIHF World Junior Hockey Championship to pay us a visit on game day! Show your valid game ticket to museum staff when you arrive, and get 15% off general admission to the museum.
Valid between December 27 and January 5, excluding January 1, during the museum's operational hours. Valid for one redemption per 2025 World Juniors hockey game ticket. Not valid for Guided Tours. Cannot be combined with other special offers.
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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