You might want to spend some time browsing the exhibits at Russian Museum, Faberge Museum, or Dostoyevsky Museum. Great Gostiny Dvor, Alexandrinsky Theatre, and Kazan Cathedral are landmarks that you won't want to miss. You can watch performances at Bolshoi Saint Petersburg State Circus, Tovstonogov Bolshoi Drama Theater, and Bryantsev Youth Theatre if you're interested in local theater.