Put simply, this grande dame of a hotel is the greatest building on Europe’s richest peninsula. It’s sumptuous, stylish, and incredibly sexy. Set on nearly 7 hectares (17 acres) of tropical trees and manicured lawns, it’s been the exclusive retreat of the international elite since 1908. The Le Spa wellness center spills outside into curtained cabanas, where you can indulge in massages and other treatments. Aside from the modernist guestrooms, the coolest place to hang out is the seaside Club Dauphin beach club (non-guests can gain access for 90€ per day). It’s reached by a funicular rail pod that descends from the hotel. The children of many visiting celebrities, including the Kennedys and Paul McCartney, have learned to swim in the Olympic-size infinity pool. The concierge can also organize private dinners at the nearby Villa Santo Sospir, the former home of Jean Cocteau.