You might want to spend some time browsing the exhibits at Museum of Soviet Arcade Machines, Russian Submarine Museum, or Rizhskaya Railway Museum. Explore landmarks like Ostankino Palace, Arch of the Main Entrance of VDNH, and Central Academic Theatre of the Russian Army. You can watch performances at Obraztsov Puppet Theatre, Adrenaline Stadium, and Moscow Durov Animal Theatre if you're interested in local theater.