By the time builders had finished the third of eight planned stories about five years later, the tower’s foundation had settled unevenly on the ground beneath it, a dense mixture of clay, sand, and shells. As a result, the structure had begun to tilt visibly toward the south.
Leaning Tower of Pisa Why Is It Leaning?
The Leaning Tower of Pisa is one of the most iconic structures in the world, and its unique tilt has been an enduring mystery for centuries. Located in the Italian city of Pisa, the tower has become a symbol of the town and is a significant tourist attraction. But why does the building lean?
The most widely accepted explanation for the Leaning Tower of Pisa’s tilt is that it was built on an unstable foundation of clay and sand. This soil could not support the tower’s weight, and the tower slowly began to lean to the side as it was being built. The tilt was further exacerbated when an additional floor was added to the tower in the early 13th century, further destabilizing its structure.
A secondary explanation suggests that the tower began to lean because of an engineering error. Historians believe that the original architects underestimated the structure’s weight and designed the foundations too shallow. This allowed the tower to slowly sink into the unstable soil beneath, causing it to lean.
Regardless of why the tower is leaning, it has become a significant tourist attraction in Pisa, and its tilt has been the subject of many scientific studies. It was first measured in the 16th century, and measurements taken in the 20