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As their contribution to Montreal’s 1967 World’s Fair Exposition the United States government commissioned architect, scientist, and well-known genius Buckminster Fuller to design a pavilion for the Canadian exhibition.

Fuller, who popularized, perfected, and named the Geodesic Dome, designed a 20-story-tall dome in the fashion of his hallmark design to represent the USA. Done in a full two-thirds sphere, rather than the typical half dome, the massive steel structure was seen and admired by over 5.6 million visitors who went into the dome to see exhibits from actual spaceships from the Apollo missions to American works of art. The dome’s steel skeleton was fitted with a clear acrylic covering, making the icosahedron look like a massive, glittering jewel.