Rumyantsev Mansion, C-189 Submarine Museum, and Erarta Museum and Galleries of Contemporary Art feature a variety of fascinating exhibits to see while you're in town. Explore notable local landmarks like St. Isaac's Cathedral, Yusupov Palace, and Admiralty Building. You can watch performances at Mariinsky Theatre, Mikhailovsky Theatre, and Tovstonogov Bolshoi Drama Theater if you're interested in local theater.