You might want to spend some time browsing the exhibits at Grand Maket Russia Interactive Museum, C-189 Submarine Museum, or Erarta Museum and Galleries of Contemporary Art. Yusupov Palace, Mariinsky Palace, and St. Petersburg Academy of Fine Arts are landmarks that you won't want to miss. You can watch performances at Mariinsky Theatre, Alexandrinsky Theatre, and St. Petersburg Philharmonia if you're interested in local theater.