C-189 Submarine Museum, Erarta Museum and Galleries of Contemporary Art, and Museum Erarta feature a variety of fascinating exhibits to see while you're in town. Sights like Saint Petersburg Conservatory, Yusupov Palace, and Mariinsky Palace are must-sees while exploring the area. You can watch performances at Mariinsky Theatre, Bryantsev Youth Theatre, and Alexandrinsky Theatre if you're interested in local theater.