The Leaning Tower of Pisa is the freestanding bell tower of the cathedral of the Italian city of Pisa. It is situated behind the Cathedral and is the third oldest structure in Pisa’s Cathedral Square (Piazza del Duomo) after the Cathedral and the Baptistry. The height of the tower is 55.86 m (183.27 ft) from the ground on the low side and 56.70 m (186.02 ft) on the high side. The width of the walls at the base is 4.09 m (13.42 ft) and at the top 2.48 m (8.14 ft). Its weight is estimated at 14,500 metric tons.