Montreal Biosphère, Environmental science museum in Saint Helen's Island, Canada.
The structure consists of a geodesic dome measuring 250 feet (76 m) in diameter and rising 203 feet (62 m) high, formed from steel struts and transparent acrylic cells creating a complex geometric pattern.
Buckminster Fuller designed the pavilion as the American contribution to Expo 67, with a 1976 fire destroying the original acrylic skin and enabling its transformation into an environmental museum in 1995.
The museum presents rotating exhibitions about the Saint Lawrence River, the Great Lakes, and global water systems, with visitors learning through hands-on stations and digital simulations.
The museum sits on Île Sainte-Hélène and is accessible via Jean-Drapeau metro station on the Yellow Line or seasonal ferry from the Old Port, with free parking available nearby.
Fuller's construction principles inspired the naming of buckminsterfullerene carbon molecules and influenced the design of Spaceship Earth at Florida's EPCOT Center.
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