It was fun to go through my Expo 86 photos again while picking out the ones for the book. Here's a shot of the USSR Pavilion exterior:
The Union of Soviet Socialist Republics (USSR) celebrated 25 years of manned space flight with a massive display of space hardware. One of the largest displays at Expo was this Soyuz-Salyut-Progress module, which had actually been used for cosmonaut training. The USSR pavilion is generally thought to have been one of the highlights of the Expo experience.