This colorful modernist cube sitting in a grassy linden-shaded meadow on Lake Zurich was the last building designed by Swiss-born architect Le Corbusier and marks a radical change of materials and styles for which he was renown. (He swapped out his beloved concrete for steel, enamel and glass). Visiting architects geek out over the 'free-floating' roof which keeps the house protected from the elements and the spacious interiors that capture more sunlight than you’d think possible. The house was formerly called Heidi Webber Haus after the woman who commissioned it (and who is still alive and was rumored to be Le Corbusier’s mistress). It was renamed in 2016 but remains the same art and museum it was created as, a space dedicated to Le Corbuser’s work and host of ongoing exhibits and shows on modernism. Catch it during the sunset when its primary colored “Mondrian panels” reflect the sun’s last golden rays.