Tsar Cannon

, literally "Tsar-cannon") is a huge cannon, founded in 1586 by a Russian founding master, Andrey Chokhov. The cannon weighs nearly 18 tonnes (17.7 tons) and has a length of 5.34 metres (17.5 feet), a calibre of 890 mm (35 inches), and an external diameter of 1200 mm (41 inches). The cannon was intended to fire grapeshot and to defend the Kremlin in times of war (...)