Dancing House (Tančící dům)

Frank Gehry and Vlado Milunić's deconstructivist landmark on the Vltava waterfront — a pair of towers that seem to sway together, nicknamed 'Fred and Ginger' for the dancing couple they evoke, one glass form curving into the other's solid shell. Built in the 1990s on a site bombed in the war, it was a bold statement of the new, post-communist Prague. There's a rooftop bar with city views. For visitors, it's a striking modern counterpoint to the city's Gothic and Baroque skyline — a playful, much-photographed building that announced Prague's reopening to contemporary architecture and the wider world.