Pisa means “marshy land”, and true to its name, the tower was built on soft clay soil with shallow foundations. This poor planning is exactly what led to its famous tilt after only the second floor was completed.
A near wonder marvel: Facts about the Leaning Tower
8 amazing facts about Leaning Tower of Pisa

1. Built on marshy land

2. Not a standalone icon

3. Other buildings sink too

4. It once leaned the other way

5. Mussolini made it worse

6. Used as a Nazi observation post

7. It may start tilting again



