Erarta Museum and Galleries of Contemporary Art, Pushkin Flat-Museum, and C-189 Submarine Museum feature a variety of fascinating exhibits to see while you're in town. St. Isaac's Cathedral, Admiralty Building, and St. Petersburg Academy of Fine Arts are notable landmarks to explore if you're in the area. You can watch performances at Mariinsky Theatre, Mikhailovsky Theatre, and St. Petersburg Philharmonia if you're interested in local theater.