You might want to spend some time browsing the exhibits at Russian Vodka Museum, C-189 Submarine Museum, or Erarta Museum and Galleries of Contemporary Art. Yusupov Palace, Mariinsky Palace, and St. Isaac's Cathedral are notable landmarks to explore if you're in the area. You can check out the local talent at Mariinsky Theatre, Arkady Raykin Variety Theater, and Tovstonogov Bolshoi Drama Theater.