Oh, the Leaning Tower of Pisa — so touristy and yet so fun. Each day, hordes of visitors come to the small northwestern Tuscan town of Pisa to take pictures "propping up" its tower. Some do it ...

This architectural curiosity is a precise half-scale version of Italy's famous Pisa tower, rising 94 feet tall with a 28-foot diameter and leaning a significant 7.4 feet, according to the town's ...

A young Galileo is perched atop the Leaning Tower of Pisa. He is in the middle of his famous experiment—the one in which he shows, by dropping cannonballs of different weights, that all objects ...

Built on the shifting sands of a former estuary, the Leaning Tower of Pisa probably began tilting not long after medieval laborers laid its first foundation stones. In the 800 years since ...

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 ...

Have you ever wondered if the Leaning Tower of Pisa is a catastrophe waiting to happen? In this one-minute video, Ask Smithsonian host Eric Schulze explains how architects and engineers spent the ...

When it comes to leaning towers, Italy’s Tower of Pisa immediately comes to mind for many. Beyond this famous tilting icon, the world is full of peculiar structures like it – from church ...