Several attempts were made to correct the tilt, notably in 19, but the problem continued to worsen. The meeting marked the 850th anniversary of Donna Berta di Bernardo, a local noblewoman, providing the finance to begin the tower’s creation. Members of that committee met again at a conference held in Pisa in November, when they retraced the stages that have led to the tower’s new stability. The challenge to arrest the incline was taken up that year by the International Committee for the Preservation of the Tower, chaired by Michele Jamiolkowski, an engineering professor at the Politecnico di Torino, and led by John Burland, an engineering professor at Imperial College London. The first stone of the Campanile di Pisa was laid on 9 August 1173 but the 56m-high structure was not completed until 1350, by which point the settling of its foundations led the tower to tilt by approximately 2.5 degrees.īy 1993, the medieval tower, one of the four buildings that make up the cathedral complex in Piazza dei Miracoli, had begun to lean by about 5.5 degrees, or around five metres from the perpendicular. Nearly 850 years after its inception, the Leaning Tower of Pisa stands a little straighter today than it has for nearly two centuries.
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