This football stadium in Montreal has a giant faceted roof structure, which folds over an indoor playing field before morphing into spectator seating surrounding a second open-air pitch (+ slideshow). More »
Herzog & de Meuron unveiled its final design for the revamp of Chelsea FC's London stadium this week, so we've created a Pinterest board full of iconic stadiums. Others include Zaha Hadid's scrapped plans for the 2020 Tokyo Olympics, the world's largest free-spanning dome and and a solar-powered structure in Brazil.
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