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Period: 1172 to 1372
The 200 years since the begin of the construction of the Pisa Tower
The Tower is designed as a straight tower bell. The soil is perfectly levelled.
The foundation works begin.
https://leaningtowerpisa.com/facts/when-was-pisa-leaning-tower-built -
1178
The tower starts to lean
Once builders reach the top of the 3rd tier, the foundation gives up under the weight of the Tower.
The Tower is leaning. Works are stopped while the Architect is looking for a solution.
Meanwhile, Pisa goes to war with Genova.
https://leaningtowerpisa.com/facts/when-pisa-tower-started-leaning -
1284
Pisa loses control.
Giovanni de Simone built the Tower up to the 7th tier. A new war stops the construction works.
In a sea battle Pisa will be defeated by Genova.
It is the beginning of the decline of Pisa's power over the Mediterranean Sea.
https://leaningtowerpisa.com/facts/who-built-pisa-leaning-tower -
1350
The tower takes a top.
The construction of the 8th level begins under the supervision of architect Tommaso Pisano.
This will be the last floor of the Tower and it will take over 20 years to complete it. -
1372
The Tower is done!
After 200 years since its foundation, the tower is finally finished.
The seven bells are placed on top. -
The tower must stand straight.
Benito Mussolini wants to make the leaning of the tower to disappear so his men try to restore the perfect vertical position it never had.
It's a disaster again: the Tower is leaning even more now. -
The Tower is closed for projects.
The tower is in danger of collapsing.
The angle of inclination far exceeds 5 ° and the structure needs immediate attention.
Following the collapse of another tower in Italy in 1989, the Leaning Tower of Pisa was closed to the public and restoration work began. -
The Tower opens again.
After more than a decade of work, the tower has lost more than 40 cm of lean.
The € 30 million project has been a great success. It brought the tower back to the lean it had 200 years ago.
The Tower is out of danger and opens its door again to the public. -
The Tower moves backwards and reduces its lean.