Kremlin's Secret

"Kremlin" means "fortress inside a city," and there are multiple kremlins in Russia. "The Kremlin," which is popularly known, refers to the Moscow Kremlin, which includes five palaces, four cathedrals, and the defensive walls and towers. Supposedly, the whole of Moscow has a secret underground metro system that parallels the public Moscow metro, which connects the Kremlin to the FSB headquarters as well as other locations of national importance. Additionally, some of the Soviet Union's honored dead were buried inside the Kremlin wall.