Saint Helen's Island (Île Sainte-Hélène) is situated in the Saint Lawrence River in Montreal, Quebec, Canada, and served as a central site for the 1967 World Expo (Expo 67). The island is renowned for its modernist architecture and historical legacy, featuring landmarks like the Biosphere—a geodesic dome designed by Buckminster Fuller, now an environmental museum. It also hosts La Ronde amusement park, offering thrilling rides and summer fireworks. Blending natural scenery with cultural events, Saint Helen's Island is a beloved destination for both locals and tourists.

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