You might want to spend some time browsing the exhibits at Cruiser Aurora, Russian Museum, or Faberge Museum. Peter and Paul Fortress, Alexandrovsky Park, and Strelka are monuments to see when you're exploring the area around State Museum of the Political History of Russia. 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.