Museum Erarta, 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. Some landmarks that you won't want to miss include Saint Petersburg Conservatory, Yusupov Palace, and Narva Triumphal Arch. You can catch a show at Mariinsky Theatre, St. Petersburg Philharmonia, and Bryantsev Youth Theatre.