Who hasn't heard of the Leaning Tower of Pisa? Architects began building this most famous of medieval campaniles in 1173, but work stopped abruptly five years later when they first noticed a ...

The Leaning Tower of Pisa and its 5.5-degree lean has vexed engineers for centuries. Partially constructed on unexpectedly soft soil, the ancient bell tower began to lean before it was even ...

Galileo put his theories of physics to the test with the incredible Leaning Tower of Pisa. Well, today is National Physics ...