History: The US Pavilion for Expo 67 engulfed in flames after a fire broke out during structural renovations. Montreal, May 20, 1976 [784 x 1024]

http://i.imgur.com/Fihs4zh.jpg via /r/HistoryPorn http://www.reddit.com/r/HistoryPorn/comments/4433ld/the_us_pavilion_for_expo_67_engulfed_in_flames/