Museo Soumaya, Mexico City
A passion project of Carlos Slim, the world's wealthiest man, and son-in-law architect Fernando Romero, the surreal, 150-foot-high structure is pure design fantasy. Windowless, except for the skylights on the top floor, the organic shape (reminiscent of Frank Gehry's Guggenheim in Bilbao) is wrapped in hexagonal aluminum plates.
Inside, you'll find Slim's eclectic 66,000-piece collection of religious relics, pre-Columbian gold coins, Diego Rivera murals, and plenty of European masters, including the world's largest private reserve of Rodins. Want to ponder The Thinker? Commune with Eve? They're here. And unlike at the Aztec empire's temples, there's no sacrifice necessary for this pilgrimage: Admission is free.
Photo: Courtesy of Museo Soumaya