Did you know that until recently people lived in apartments within the Kremlin? After the revolution, the ancient fortress at the heart of Moscow did not empty out but became somewhat like a communal apartment. In 1918, the leader of the proletariat, Vladimir Lenin, moved here from the National Hotel, followed by other leaders of the new Soviet power. By the end of 1920, more than two thousand people were registered as residing in the Kremlin. The new residents spread out across all buildings: they could be found in the Great Kremlin Palace, the Poteshny Palace, and the Terem Palace, the Senate, the flanks near the Spasskaya gates, the Secret Tower, and the Ivan the Great Bell Tower. Lenin, with his wife Nadezhda Krupskaya and younger sister, as well as his fellow ideologues, including Joseph Stalin, Leon Trotsky, and Mikhail Kalinin, settled in the Cavalier's Building. Nearby, in the Great Kremlin Palace, revolutionaries and state figures Yakov Sverdlov and Anatoly Lunacharsky, as well as the Bolshevik poet and propagandist Demian Poor, made their homes. On certain days, the Moscow Kremlin resembled a bustling market. Locals, beggars, and officials scurried about everywhere. By the late 1920s, the number of Kremlin residents began to decrease — they moved to separate apartments within the city. In the mid-1950s, the Kremlin began to open up to ordinary visitors — museums were established inside. The last to move out of a Kremlin apartment was Marshal Kliment Voroshilov — he left it in 1962.