What is the main problem in pisa tower?

Answer 1

The main problem with the Leaning Tower of Pisa is its unintended tilt, which results from unstable foundation soil. The tower began to lean during its construction in the 12th century due to inadequate support from the soft, marshy ground. Efforts to stabilize and prevent its collapse have included engineering interventions, such as soil extraction and the addition of counterweights. Despite these challenges, the tilt has become a defining characteristic and a major tourist attraction.