After more than two decades of efforts to modify the sloping tower of Pisa, engineers say the historic icon in Tuscany is 4 centimeters (1.57 inches) high.
What is the secret of straightening the tower of Pisa over time?
An expert on an international commission overseeing the tilt, Nonsianti Squillia, said the progressive reform of tilt is good news. He stressed that they were interested in the overall structural state of the tower, and that that point was more important to them.
The tower, which dates back to the twelfth century, was reopened in 2001, 10 years after it was closed to allow workers to reduce its tendency. Hundreds of tons of lead were used for counterweight at the base of the tower, and the soil was further pulled from under the substrates for adjustment on its tilting. Indeed, experts have succeeded in reducing the tower's tilt by 43 centimeters (17 inches).