Garisenda tower in Italy's Bologna has been sealed off after experts warned that the 900-year-old tower might fall.
The tower is also known as the "leaning tower," but it is not the iconic Tower of Pisa, which leans at 5 degrees. This 14th-century tower leans at an angle of 4 degrees. The authorities have said that "the tower is at great risk of falling, so we need to be ready for every eventuality".
