Oh, the Leaning Tower of Pisa — so touristy and yet so fun ... meaning that at the top, it's displaced nearly 13 feet from its bottom. Yikes! And yet, it's still architecturally sound enough ...

Built on the shifting sands of a former estuary, the Leaning Tower of Pisa probably began tilting ... the seventh cornice up to the bell chamber's floor on the south side, while only adding ...

In the mid-1990s, lead blocks like these helped pull the tower over half an inch closer to vertical at the top - a significant amount to engineers. The Pisa Commission stabilizes the masonry by ...