History with a Twist
The Leaning Tower Was Never Straight
Overview
The Tower of Pisa began leaning during construction.
Key Insights
The Leaning Tower Was Never Straight is a fascinating subject within history with a twist. The Tower of Pisa began leaning during construction. Started tilting after first three floors. Took 199 years to build. Engineers tried to compensate while building. Unexpected sinking of the foundation.