Tsar Cannon

Nikolai Galkin/TASS
The bronze Tsar Cannon with a diametre of 120 centimetres (4 feet) barrel never fired. The Cannon was cast by craftsman Andrey Chokhov in 1586. The cannon never took part in any actual battle, although it was intended to shoot both stone cannon balls and buckshot. The cast iron cannon balls that were placed near the Tsar Cannon in mid-19th century do not actually fit the barrel.