If you can only do one thing in Moscow, then come here. The other thing that is a must is to ride the metro. Red Square offers hours of explorer without spending a cent. Within a 10 minute walk you can explore the following besides Red Square: St. Basil, the Theater, GUM, underground mall, souvenir vendors, a walk down Nikolskaya Street and lots more. And of course make a visit for the history that has taken place here.
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