WINTER PALACE RUSSIA

Best known as the outer casing for the remarkable State Hermitage Museum, this pistachio-colored gem on the banks of the Neva River in St Petersburg was designed by Francesco Bartolomeo Rastrelli as the winter residence of the Russian tsars. Filling an entire block, it bears all the whimsy and ornamentation of the baroque period, and statues line its roof edges like divers about to plunge into the Neva.