Leaning Tower of Pisa, Italy

The Leaning Tower of Pisa is the third structure by time in the Cathedral Square and is situated behind the Cathedral.

The tower presently leans to the southwest at an angle of 3.97 degrees. At the beginning it intended to stand vertically but was impossible due to a poorly laid foundation and loose substrate that has allowed the foundation to shift direction. The height of the tower is 55.86 m from the ground on the lowest side and 56.70 m on the highest side. Its weight is estimated at 14,500 tones.