Four Seasons Hotel Lion Palace, St. Petersburg: Designed in 1817 as a Russian palace and once home to Princess Lobanova-Rostovskaya, this former palace will open as the Four Seasons Hotel Lion Palace St. Petersburg in 2013. Located in the heart of the city in the historic Admiralteysky district, the 177-room hotel is just two blocks from the Hermitage Museum. (Four Seasons Hotels and Resorts)