Here's a group of photos from Montreal's "Expo 67", the wildly successful Exposition that took place in some year that I forget. Maybe 1968.
If you went up the long escalator in the U.S. Pavilion to where the spacecraft were, and looked up, you would see these parachutes; this is the sight that would bring joy to any astronaut in his capsule during reentry. Prepare for splashdown!
Here's another shot from within the U.S. Pavilion, looking through the panes of plastic that covered the geodesic sphere. Fun fact: fair organizers had expected around 35 million guests to visit, and they were surprised when that number exceeded 50 million!
Here's an oddball photo near the Polymer exhibit. Who doesn't love polymers! I like them with butter and lemon. Notice the "minirail" in the background.
Beyond the patio dining area, you can see the six jagged-yet-circular towers of the "State of New York" pavilion. All of the towers are joined at the second-floor level by a common roof, and the display areas inside tell the story of New York (only they covered up all the vampire stuff). You can also see the polka-dotted edge of a carousel-shaped building that actually rotated past more exhibits. It rotated at over 1000 rpm!
Japan's pavilion resembles a series of three multi-level parking garages, in my opinion. (Sorry Japan)! Somewhere nearby there was a traditional Japanese restaurant, complete with kimono-clad hostesses. The pavilion was divided into three sections designed to show a blend of modern technology and traditional Japanese style. Japan in Progress, Harmony With Nature, and Harmony With Technological Advance were the themes of these sections.
I have lots more from Expo '67!