TED-Ed: Why doesn't the Leaning Tower of Pisa fall over? | Alex Gendler

In 1990, engineers faced a crisis as Pisa's Leaning Tower was at risk of toppling. Historical construction errors and soil instability caused the tilt. Over centuries, various failed attempts were made to correct it. Modern engineers used computer models and new techniques to stabilize the tower, reducing its tilt to about 4 degrees. The tower now stands as a monument to engineering challenges and solutions, expected to remain stable for 300 years.

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