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RE: 7 World’s Continents Photo Challenge - North American Friday week #94 - the absolute winner takes 200 SBD!
TheMontreal Biosphere is a very interesting building, it is a geodesic dome of 62 meters height that houses a museum about the environment, however its design allows to partially control the temperature of its interior using the shadows and the natural light. It was built for the 1967 World Fair.