The Biosphere is the largest spherical structure of its kind in the world, designed by American architect Buckminster Fuller for the US Pavilion at Expo 67. Today it serves as an environmental museum focusing on the relationship between society and the environment. Located in the heart of Parc Jean-Drapeau on Ile Sainte-Helene, it offers interactive experiences on climate change and sustainable development. The stunning geodesic structure is an architectural icon.