Capital of the USSR and of the Moskva region, on the Moskva river 640 km/400 mi SE of Leningrad; population (1987) 8,815,000. Its industries include machinery, electrical equipment, textiles, chemicals, and many food products. features The 12th-century Kremlin (Citadel), at the centre of the city, is a walled enclosure containing a number of historic buildings, including three cathedrals, one of them the burial place of the tsars; the Ivan Veliki tower 90 m/300 ft, a famine-relief work commissioned by Boris Godunov 1600; various palaces, including the former imperial palace, museums, and the Tsar Kolokol, the world's largest bell (200 tonnes) 1735. The walls of the Kremlin are crowned by 18 towers and have five gates. Red Square, used for political demonstrations and processions, contains St Basil's Cathedral, the state department store GUM, and Lenin's tomb. The headquarters of the KGB, with Lubyanka Prison behind it, is in Dzerzhinsky Square; the underground railway was opened 1935. Institutions include Moscow University 1755 and People's Friendship University (for foreign students) 1953; the Academy of Sciences, which moved from Leningrad 1934; Tretyakov Gallery of Russian Art 1856; Bolshoi Theatre 1780 for opera and ballet; Moscow Art Theatre 1898; Moscow State Circus. Moscow is the seat of the patriarch of the Russian Orthodox Church. On the city outskirts is Star City (Zvezdnoy Gorodok), the Soviet space centre. Moscow is the largest industrial centre of the USSR, linked with Stavropol by oil pipeline 480 km/300 mi, built 1957. history Moscow, founded as the city-state of Muscovy 1127, was destroyed by the Mongols during the 13th century, but rebuilt 1294 by Prince Daniel (died 1303) as the capital of his principality. During the 14th century, it was under the rule of Alexander Nevski, Ivan I (1304-41), and Dmitri Donskai (1350-89), and became the foremost political power in Russia, and its religious capital. It was burned in 1571 by the khan of the Crimea, and ravaged by fire in 1739, 1748, and 1753; in 1812 it was burned by its own citizens to save it from Napoleon's troops, or perhaps by accident. It became capital of the Russian Soviet Federated Social Republic (RSFSR) 1918, and of the Union of Soviet Socialist Republics (USSR) 1922. In World War II Hitler's troops were within 30 km/20 mi of Moscow on the northwest by Nov 1941, but the stubborn Russian defence and severe winter weather forced their withdrawal in Dec.