It became apparent that the Leaning Tower of Pisa was leaning in the late 1170s, after completion of the first three of the tower's planned eight stories. The leaning was caused by the uneven settling of the building's foundations in the soft ground.

Why does the Leaning Tower of Pisa not fall?

The leaning Tower of Pisa does not fall because its center of gravity has been carefully kept within its base. … In short, this is why the Tower of Pisa does not topple over. The Leaning Tower doesn't fall because its center of gravity is carefully kept within its base.

Why the Leaning Tower of Pisa leans for kids?

Answer: The Leaning Tower of Pisa leans because its foundations are in soft soil which has over time caused it to sink. This has caused the tower to lean.