A nine-hundred-year-old tower in the Italian city of Bologna known for its significant lean will be shored up using the same equipment that stabilised the Tower of Pisa as concerns mount that it might be on the verge of collapse. The 48m tall Garisenda tower was built in the 12th century, but just two centuries later it began to tilt.

Today, it leans at an angle of four degrees, slightly more than the Pisa tower's famous 3.9 degree slant. Late last year, the streets surrounding the tower were temporarily sealed off as scientists monitored the structure. After analysing the tower for evidence of movement and cracking, they determined it was at "high risk" of collapse.