We're open again!

Find out what we’re doing to keep you safe.

When you’re ready, we’re ready for you.

Our blast doors are open! We look forward to welcoming you back underground.

We strongly recommend wearing a mask while visiting the site. All our staff and volunteers are required to wear masks until further notice.

Read more about how we’re keeping you safe. We thank you for your patience and continued support.



Wednesday – Friday: 10:00 a.m. – 4:00 p.m.

Saturday – Sunday: 10:00 a.m. – 3:00 p.m.

Buy Tickets

*For the best experience, we suggest at least one hour to explore the Diefenbunker. The admissions desk closes 30 minutes before the museum closes. Tickets cannot be purchased after this time.

*We highly recommend buying your tickets online in advance of your visit to the museum to ensure there are still spots available.

See all holiday hours & special closures.


Summer Spy Camp | June 27 to September 2, 2022

Calling young secret agents age 6 to 12! Become a world-class secret agent and complete top-secret missions. Register for Summer Spy Camp.

Virtual & On-Site Educational Programs | Ongoing

Now accepting 2022 bookings. Experience Canadian history from an immersive perpsective unlike any other. Learn more.


We have an informative free Audio Guide that gives the history of the Diefenbunker, available in eight languages.

Connect to the Diefenbunker’s free Wi-Fi on your device to begin! Select your preferred language once you open the Audio Guide. Don’t forget your earbuds/headphones!

Virtual Tours

You can view the Diefenbunker from any device, and even with VR goggles if you have them! Click on the images below to open the tour.

Entrance/Blast Tunnel

100/200 Levels

400 Level

Machine Room – Self-guided

300 Level

Machine Room – Narrated

About Canada’s Cold War Museum

The Diefenbunker is a massive four-storey underground bunker, built between 1959 and 1961. During the Cold War, top officials were to take shelter here in the event of a nuclear war. It was active as Canadian Forces Station Carp until 1994.

Today, it operates as a not-for-profit, charitable museum with award-winning tours and programs.

Let’s learn more about the Diefenbunker from home with our collection of online activities and resources. You can explore:

If you have questions, let’s connect on Facebook, Instagram, or Twitter. We will happily answer any of your questions.

About the Cold War

The Cold War is the period between the end of the Second World War in 1945 and ends with the fall of the Berlin Wall in 1989, followed by the collapse of the Soviet Union in 1991. It was a period of tense conflict between the United States and the Soviet Union and each country’s respective allies.

Learn more in this 2-minute video from Historica Canada explaining the Cold War and Canada’s role.

Ways to Support

During the unprecedented times, we’ve had many people ask to help. Thank you. 

As a private, non-profit museum, we depend on visitors for 75% of our operating revenue. We need your support now more than ever. There are many easy ways that you can best support us so we can continue to inform and inspire you through lessons learned from the Cold War.


Recipients of the 2021 OMA Award of Excellence in Special Projects

Learn More

Ontario Museum Association | Association musées de l'Ontario Award of Excellence 2021

We have been awarded the #SafeTravels Stamp. This international symbol allows travellers to recognize institutions which have adopted health and hygiene, standardized protocols – so consumers can experience ‘Safe Travels’.


Vote for the Diefenbunker as your favourite museum in Ontario’s Choice Awards!

You can vote once per day! Voting closes September 11, 2022.

Attractions Ontario - Ontario's Choice Awards - Finalist - Top Museum/Art Gallery/Historic Site

Summer Fun Guide. What are you doing this weekend? Click here for attractions, events & accommodations in Ontario.
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