You might want to spend some time browsing the exhibits at Bunker-42 on Taganka, Retro Auto Museum, or Andrei Rublev Museum of Early Russian Art. Palace of the Romanov Boyars, Spasskaya Tower, and Cathedral of the Assumption are notable landmarks to explore if you're in the area. You can catch a show at Moscow International House of Music, Forum Hall, and Taganka Theatre.