1- Multiple engineers tried, over hundreds of years to correct the famous lean
When construction began again on the third story in the 13th century, engineers tried to stop the tilt by building straight upwards, but the center of gravity was thrown off and the tower simply began to lean in a different direction.
As construction continued the tower eventually settled back into its southward tilt, where it has stayed ever since.
2- The most famous structurally unsound building in the world is open to visitors
Since its restoration and slight un-tilting, the structure’s integrity is monitored constantly and the building hosts large numbers of visitors every day.
If you want to climb to the top you should book tickets in advance.
3- The tower is currently stable
The tower has survived centuries of well-meaning but misguided attempts to right it, including various engineers who added levels and arches of all different heights and one overzealous group who dug around the tower to open an underground tour.
Someone finally got it right in the 21st century and as of 2001, the tower was officially declared stable for at least the next 200 years.