MONTREAL - SEPTEMBER 27: The Montreal Biosphere in Montreal, Quebec on September 27, 2011. The dome, originally used as a pavilion during the 1967 World's Fair, now houses an environmental museum.
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MONTREAL - SEPTEMBER 27: The Montreal Biosphere in Montreal, Quebec on September 27, 2011. The dome, originally used as a pavilion during the 1967 World's Fair, now houses an environmental museum.