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, First Engineer Bridge, and St. Michael's Castle are monuments to see when you're exploring the area around Transfiguration Cathedral. You can watch performances at Leningrad Center, Alexandrinsky Theatre, and Mariinsky Theatre if you're interested in local theater.