Diefenbunker: Canada’s Cold War Museum
Best 20th Century History Attraction 2025
The Diefenbunker is Canada’s most significant Cold War artifact — it is an impressive four-storey underground facility that operated as the country’s central communications headquarters during the Cold War, ready at any moment in case of a nuclear attack. Today, it is a one-of-a-kind museum and national historic site.
Descend into history, 75 feet underground, and explore stories and artifacts from the past at Ottawa’s immersive history destination.
Visit Site
