You might want to spend some time browsing the exhibits at Erarta Museum and Galleries of Contemporary Art, C-189 Submarine Museum, or Alexander Pushkin Museum and Memorial Apartment. Strelka, Peter and Paul Fortress, and State Hermitage Museum are monuments to see when you're exploring the area around Tuchkov Bridge. You can catch a show at Mariinsky Theatre, Alexandrinsky Theatre, and Bolshoi Saint Petersburg State Circus.