You might want to spend some time browsing the exhibits at Grand Maket Russia Interactive Museum, C-189 Submarine Museum, or Russian State Museum of the Arctic and Antarctic. Explore landmarks like Grand Choral Synagogue, Saint Petersburg Conservatory, and Yusupov Palace. You can watch performances at Rimsky-Korsakov Conservatory, Mariinsky Theatre, and Alexandrinsky Theatre if you're interested in local theater.