Erarta Museum and Galleries of Contemporary Art, Alexander Pushkin Museum and Memorial Apartment, and Pushkin Flat-Museum feature a variety of fascinating exhibits to see while you're in town. Yusupov Palace, St. Isaac's Cathedral, and Mariinsky Palace are monuments to see when you're exploring the area around C-189 Submarine Museum. You can watch performances at Mariinsky Theater Concert Hall, Mariinsky Theatre, and Mikhailovsky Theatre if you're interested in local theater.