The Garisenda Tower, like the Tower of Pisa, has leaned for centuries as the ground on which it was built gave way soon after its construction. It slants at four degrees compared to 3.9 degrees the Tower of Pisa leans at. Last month, the area around the Garisenda Tower was cordoned off due to increasing concerns about its potential to collapse. Bologna’s mayor, Matteo Lepore, claims that the time to restore the structure will match the 10 years it took to reinforce the Tower of Pisa.

Built in the 12th century, the Garisenda Tower, which stands at approximately 157 feet, sits alongside the taller, and also leaning, Asinelli Tower. As reported by The Guardian, Italy’s civil protection agency has issued a “yellow” alert for the area around the two towers indicating the space is under watch. However, they aren’t believed to pose any immediate risks to people’s safety. The mayor has also urged the government to work to make the towers UNESCO World Heritage sites. Work to reinforce the towers has been ongoing since the 1990s. The city has stated that preliminary work on the Garisenda Tower will include creating a containment area to prevent any damage to nearby structures or harm to passerby.