Prepare to be amazed by the incredible story of how engineers saved the Leaning Tower of Pisa from collapse! Grady Hillhouse, the host of Practical Engineering, delves into the history of this iconic 12th-century tower and its ever-increasing tilt. Despite facing wars and the test of time, the tower’s lean became a cause for concern in 1990, prompting a team of engineers, architects, and restoration experts to devise a solution.

The committee explored various ideas to rectify the lean, eventually settling on three potential methods. The first involved pumping out groundwater from the sand beneath the tower’s north side. However, this approach proved ineffective due to the soil’s conductivity. The second idea, electroosmosis, also failed to yield the desired results. Undeterred, the engineers turned to under-excavation as their last resort. By removing soil from beneath the tower, they successfully reduced the lean and ensured its stability.

It’s important to note that the goal was not to completely straighten the tower, as its signature lean is an integral part of its historical character. The engineers aimed to make it safe for visitors while preserving its unique charm and connection to its 850-year history. The project’s success not only saved the tower from collapse but also allowed future generations to marvel at its iconic tilt.

The groundbreaking techniques used by the engineers during the stabilization project continue to be employed today. Their persistence, inventiveness, and dedication to preserving the tower’s heritage are truly commendable. So, the next time you see a tourist photo of someone pretending to hold up the Leaning Tower of Pisa, remember that the real heroes are the contractors, restoration experts, and engineers who ensured its stability for centuries to come.