C-189 Submarine Museum, Erarta Museum and Galleries of Contemporary Art, and Grand Maket Russia Interactive Museum feature captivating exhibits. St. Nicholas' Naval Cathedral, Saint Petersburg Conservatory, and Yusupov Palace are well-known local landmarks worth a visit. You can watch performances at Mariinsky Theatre, Rimsky-Korsakov Conservatory, and Alexandrinsky Theatre if you're interested in local theater.