The Leaning Tower of Pisa
Leaning Tower of Pisa : In the Italian city of Pisa ,The Leaning Tower of Pisa is the freestanding bell tower or campanile of the cathedral . It also know worldwide for its nearly four-degree lean, the result of an unstable foundation. Experts says the famous tower at Pisa will lean for at least another 200 years . In 1990,It may even stay upright well, almost upright forever .A few ill-advised construction projects accelerated the Leaning Tower's invisibly slow fall during the past couple of centuries and it titled 5.5 degrees , it's acutest angle ever . The tower is situated behind the Pisa Cathedral and is the third-oldest structure in the city's Cathedral Square ,after the cathedral and the Pisa Baptistry. The Tower began to learn during construction in the 12th century , due to soft ground which could not properly support the structure's weight , and it worsened through thee completion of construction in the 14th century ,by 1990, the tilt had reached 5.5 degree