The Leaning Tower of Pisa is famous because it does not stand

upright.

The Leaning Tower of Pisa is famous because it does not stand vertically. Its characteristic tilt is what makes it iconic and attracts millions of visitors every year. The tower began to lean shortly after its construction in the 12th century due to an uneven foundation and soft ground. Over the centuries, several attempts were made to stabilize the tower and prevent it from further leaning. In recent years, extensive restoration works have been carried out to ensure the tower's structural integrity and safety for visitors. Despite its tilt, the tower continues to stand and is now one of Italy's most visited landmarks.