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Leaning Tower • Pisa

map of the miracles square

The Leaning Tower is the freestanding bell tower of the Cathedral of Pisa. It is situated behind it and it is the third oldest structure in the Square of Miracles after the Cathedral and the Baptistry.
Although intended to stand vertically, the tower began leaning to the southeast soon after the onset of construction in 1173 due to a poorly laid foundation and loose substrate that has allowed the foundation to shift direction. The tower leans to the southwest; The height is 55.86 m on the lowest side and 56.70 m on the highest. The width of the walls at the base is 4.09 m and at the top 2.48 m. The tower has 296 or 294 steps; the seventh floor has two fewer steps on the north-facing staircase. Prior to restoration work between 1990 and 2001, the tower leaned at an angle of 5.5 degrees, but the tower now leans at about 3.99 degrees.

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