The Diefenbunker is a decommissioned military bunker (now a museum) built as an emergency shelter for the government of Canada. The facility, located in Carp (near Ottawa, Ontario), was built at the height of the Cold War and opened in 1961 by the Canadian Forces.Photo: Mike Steinhauer / Moment / Getty Images
1 of 5 Photo: krblokhin / iStock / Getty Images
2 of 5 Photo: Carl & Ann Purcell / Corbis Documentary / Getty Images
3 of 5 Photo: SENEZ / Moment / Getty Images
4 of 5 Photo: Olga Pankova / Moment / Getty Images
5 of 5 Photo: Thomas Fricke / The Image Bank Unreleased / Getty Images