You'll want to browse the collections at Cruiser Aurora, Erarta Museum and Galleries of Contemporary Art, and Museum of the Defense and Siege of Leningrad. Alexandrovsky Park, Peter and Paul Fortress, and Strelka are notable landmarks to explore if you're in the area. You can watch performances at Baltic House Theatre, Arkady Raykin Variety Theater, and Bolshoi Saint Petersburg State Circus if you're interested in local theater.