The Expo 67 International and Universal Exposition featured 90 pavilions representing Man and His World, on a theme derived from Terre des Hommes, written by the famous French pilot Antoine de Saint-Exupéry. The most popular display of the exposition was the soaring Soviet Union pavilion, which attracted about 13 million visitors. Rounding out the top five pavilions (by attendance) were: Canada (11 million visitors), the United States (9 million), France (8.5 million), and Czechoslovakia (8 million). The participating countries were: