Bad example....they even tried to fix it and had it closed to visitors because of the lean....lol
The Leaning Tower of Pisa is the world's most famous construction mistake. The architect, Bonanno Pisano,
found his bell tower starting to lean almost immediately after he began to build it. And the lean kept increasing through the centuries, a tourist bonanza for Pisa, that would end if the tower leaned too far and fell.
This picture was taken in 1994, prior to a major engineering effort to stabilize the tower and reduce the lean by 10%. The tower was also closed to visitors.