The Kremlin is a fortified complex at the heart of Moscow, overlooking the Moskva River to the south, Saint Basil’s Cathedral and Red Square to the east, and the Alexander Garden to the west. It is the best known of the kremlins (Russian citadels) and includes five palaces, four cathedrals, and the enclosing Kremlin Wall with Kremlin towers. The complex is the official residence of the President of the Russian Federation and supreme bodies of state power. Kremlin is linked to all the most important historical and political events in Russia since the 13th century. Red square is one of the most famous squares of Moscow and Russia. The length of the massive, bricked square is 330 meters, and it separated the fortified citadel from the city at large. The square area has served as a marketplace, festival ground, gathering place and a parade ground.