You'll want to browse the collections at Andrei Rublev Museum of Early Russian Art, Retro Auto Museum, and Bunker-42 on Taganka. Catherine's Palace, Palace of the Romanov Boyars, and Spasskaya Tower are landmarks that you won't want to miss. You can watch performances at Theater of Russian Drama, Taganka Theatre, and Moscow International House of Music if you're interested in local theater.