You might want to spend some time browsing the exhibits at Erarta Museum and Galleries of Contemporary Art, C-189 Submarine Museum, or Russian Vodka Museum. Strelka, Russian Admiralty, and Peter and Paul Fortress are monuments to see when you're exploring the area around Tuchkov Bridge. You can catch a show at Arkady Raykin Variety Theater, Mariinsky Theatre, and Alexandrinsky Theatre.