This winter Four Seasons’ first property in Russia—the 177-room Hotel Lion Palace St. Petersburg—will open inside a onetime royal residence. After an artful overhaul by ReardonSmith Architects, the 19th-century building now juxtaposes neoclassical features (among them a yellow stucco façade and a dramatic double staircase) with modern additions such as a sumptuous spa, which is set beneath a glass ceiling in a former courtyard. Rooms from $450/night; fourseasons.com