Interesting dive into the technology, troubleshooting, and process behind stabilizing the Leaning Tower of Pisa.
In the 90’s, engineers discovered that the tower was extremely close to collapse, within just a few % of the structural limit. They spent a decade researching, experimenting, and developing a solution to permanently stabilize the tower, while also preserving it’s unique features.
They did so with temporary weights or other methods like cables to make sure it didn’t get worse or collapse.
It’s not a very long video :/ it’s mentioned in there.