"Risk of possible collapse of the Garisenda Tower: Leaning towers of Italy and the World."

47 meters and over900 years. Together with the most impressive "sister" Asinelli, the Garisenda Tower is an undisputed symbol of Bologna. With its leaning structure, it winks at Italy's (and the world's) most famous leaning tower, the Leaning Tower of Pisa. But it is precisely its inclination that puts it at risk today.

Other leaning towers in Italy...

Garisenda Tower

Where: Bologna, Emilia-Romagna, Italy

Height: 47 meters

Inclination: unknown

The Garisenda Tower holds a record: it is considered by experts to be the tallest leaning stone structure in the world. However, Italy and the entire world are rich in "crooked buildings" that defy the laws of physics and attract tourists from all corners of the globe.

Leaning Tower of Pisa

Where: Pisa, Tuscany, Italy

Height: 56 meters

Inclination: 4.8°

Tower of San Pietro in Castello

Where: Venice, Veneto, Italy

Height: unknown

Inclination: unknown

• Image - credit @klausjan

Campanile of San Michele degli Scalzi

Where: Pisa, Tuscany, Italy

Height: unknown

Incline: 5°

Tiger Hill Tower

Where: Suzhou, Jiangsu, China

Height: 47.3 meters

Incline: 3°

The Leaning Tower of Nevyansk

Where: Sverdlovsk Oblast, Russia

Height: 57.5 meters

Incline: 3°

Tower of Suurkhuzhen

Where: Suurhuzhen, East Frisia, Germany

Height: 27.37 meters

Inclination: 5.19°

The tower of Kilmacduagh monastery

Where: Gort, County Galway, Ireland

Height: 34 meters

Inclination: unknown

Greyfriars Tower

Where: Norfolk, England

Height: 28 meters

Tilt: 1°

• Image - credit @elinor.clarkson

Oldehove Tower

Where: Leverdingen, Netherlands

Height: 40 meters

Inclination: 2°

The tower of Caerphilly Castle

Where: Caerphilly, Wales

Height: unknown

Inclination: unknown