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Biosphere of Montreal - 160, Chemin Tour-de-l'Isle Île, Sainte-Hélène, Montreal, Québec, Canada

Staying with large, rounded things, the Biosphere of Montreal was contributed to Montreal’s 1967 World’s Fair Exposition by the US government. It was designed by Buckminster Fuller, an architect and scientist. Fuller named it the Geodesic Dome, and it stands 20 storeys tall. Initially, the biosphere contained exhibits relating to the Apollo missions. When the fair was over, the biosphere remained. It caught fire at one stage but managed to survive the experience.