stone brought back to Earth from the Apollo 11 lunar mission only eight months before the opening of the exposition. The pavilion also featured as its centerpiece a large exhibition on the Apollo project containing the actual Apollo 8 spaceship, which in December 1968 made the first manned voyage around the moon. There was also a full-scale model of the Apollo 11 Lunar Lander. Like the American pavilion, the U.S.S.R. pavilion was a dominant architectural spectacle on the site. It was the largest foreign pavilion on site, containing 270,000 square feet of floor space, and was 360 feet high. Exhibitions were also themed