Fixing leaning tower of Bologna will take at least 10 years and €20m, says mayor

The leaning Garisenda tower, pictured here next to its taller cousin Asinelli, will cost €20m ($21.5m) and at least 10 years to repair, the mayor of Bologna has said. Photograph: Ian Dagnall/Alamy

Work to prevent the collapse of a leaning medieval tower in the heart of the northern Italian city of Bologna will cost €20m ($21.5m) and take 10 years at least, its mayor has said.

Last weekend, the city unveiled a €4.3m (£3.7m) project to shore up the Garisenda tower – one of the city’s two towers that look out over central Bologna, providing inspiration over the centuries to painters and poets and a lookout spot during conflicts.