You'll want to browse the collections at Museum of the Defense and Siege of Leningrad, Faberge Museum, and Russian Museum. Bolshoi Saint Petersburg State Circus, Beloselsky-Belozersky Palace, and Anichkov Palace are monuments to see when you're exploring the area around Transfiguration Cathedral. You can watch performances at Oktyabrskiy Big Concert Hall, Alexandrinsky Theatre, and Rimsky-Korsakov Conservatory if you're interested in local theater.