You might want to spend some time browsing the exhibits at Cruiser Aurora, Kirov Apartment Museum, or Museum of the Defense and Siege of Leningrad. Peter and Paul Fortress, Strelka, and State Hermitage Museum are monuments to see when you're exploring the area around State Museum of the Political History of Russia. You can watch performances at Bolshoi Saint Petersburg State Circus, Alexandrinsky Theatre, and Oktyabrskiy Big Concert Hall if you're interested in local theater.