Montreal Expo '67

Terre Des Hommes The 1967 International and Universal Exposition or Expo 67, as it was commonly known, was a general exhibition, Category One World's Fair held in Montreal, Quebec, Canada, from April 27 to October 29, 1967. It is considered to be the most successful World's Fair of the 20th century with the most attendees to that date and 62 nations participating. It also set the single-day attendance record for a world's fair, with 569,500 visitors on its third day. Expo 67 featured 90 pavilions representing Man and His World themes, nations, corporations, and industries including the U.S. pavilion, a geodesic dome designed by Buckminster Fuller. The expo also featured the Habitat 67 modular housing complex designed by architect Moshe Safdie, which was later purchased by private individuals and is still occupied. The geodesic dome, also known as the Montreal Biosphere, was originally formed by an enclosed structure of steel and acrylic cells, 249 ft in diameter and 203 ft high.