Take a unique look at the most intensely scrutinized building on earth and see how science is attempting to save a medieval masterpiece with a high-risk rescue plan that may add centuries to the life of this architectural treasure.

Italy's Leaning Tower of Pisa is a 14th-century masterpiece of medieval architecture and a strikingly original, world-renowned landmark. But, to an international committee of elite engineers and architects charged with sparing the tower from imminent collapse, it's a monument to frustration. Scientists need to act now and act fast to rescue the tower. NOVA brings you inside a riveting battle to right history's wrongs.

NOVA uncovers such little-known facts about the Tower such as; after Pisa's first levels were built, work was halted for 100 years; it rests on ground as soft as beach sand; the original architect is unknown. Tilting at an amazingly dangerous angle, the problem is obvious, but a solution isn't. Insightful interviews, fascinating footage and rare access to its unique infrastructure reveal centuries of eye-opening historical facts and curious restoration efforts. Trace the wondrous past, then watch the present high-risk rescue plan that hopes to add centuries to the life of this architectural treasure.