Montreal Biosphère

There is quite an interesting story with The Biosphère museum in Montreal, which is dedicated to the environment. It is located at Parc Jean-Drapeau, on Île Sainte-Hélène in the former pavilion of the United States for the 1967 World Fair Expo 67.

The architect of the geodesic dome was Buckminster Fuller. The building originally formed an enclosed structure of steel and acrylic cells, 76 metres (250 ft) in diameter and 62 metres (200 ft) high. The dome is a Class 1, Frequency 16 Icosahedron. A complex system of shades was used to control its internal temperature.

Architects from Golden Metak Productions designed the interior exhibition space. Visitors had access to four themed platforms divided into seven levels. The building included a 37-metre-long escalator, the longest ever built at the time. The Minirail monorail ran through the pavilion

In the afternoon of 20 May 1976, during structural renovations, a fire burned away the building's transparent acrylic bubble, but the hard steel truss structure remained. The site remained closed until 1990, when it was once again opened to public as The Biosphère museum.