The History of Leaning Tower of Pisa

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The Leaning Tower of Pisa (Italian: Torre pendente di Pisa) or simply the Tower of Pisa is a freestanding bell tower, of the cathedral of the Italian city of Pisa, known worldwide for its nearly four-degree lean, the result of an unstable foundation. The tower is situated behind the Pisa Cathedral and is the third-oldest structure in the city's Cathedral Square (Piazza del Duomo), after the cathedral and the Pisa Baptistry.

 The height of the tower is 55.86 metres (183.27 feet) from the ground on the low side and 56.67 metres (185.93 feet) on the high side. The width of the walls at the base is 2.44 m (8 ft 0.06 in). Its weight is estimated at 14,500 metric tons The tower has 296 or 294 steps; the seventh floor has two fewer steps on the north-facing staircase.

 The tower began to lean during construction in the 12th century, due to soft ground which could not properly support the structure's weight, and it worsened through the completion of construction in the 14th century. By 1990 the tilt had reached 5.5 degrees. The structure was stabilized by remedial work between 1993 and 2001, which reduced the tilt to 3.97 degrees.
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Aside from being one of the 7 wonders of the Earth, the leaning tower of Pisa is also a tourist attraction. There's this pose of trying to hold the tower. Funny but also a bit cringy and mainstream.
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There has been controversy about the real identity of the architect of the Leaning Tower of Pisa. For many years, the design was attributed to Guglielmo and Bonanno Pisano, a well-known 12th-century resident artist of Pisa, known for his bronze casting, particularly in the Pisa Duomo. Pisano left Pisa in 1185 for Monreale, Sicily, only to come back and die in his home town. A piece of cast bearing his name was discovered at the foot of the tower in 1820, but this may be related to the bronze door in the façade of the cathedral that was destroyed in 1595. A 2001 study seems to indicate Diotisalvi was the original architect, due to the time of construction and affinity with other Diotisalvi works, notably the bell tower of San Nicola and the Baptistery, both in Pisa.
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Bonnano Pisano


Diotisalvi

                                             
 The Assunta bell is one of the bells in Leaning tower of Pisa. As before becoming a tourist attraction, the leaning tower of Pisa serve as a church and a bell tower in general.

https://docs.google.com/presentation/d/1f3BgAFJF-_4IBjOtEZ_RS5VsVUaW1itG_sT4WTZRqX0/edit?usp=sharing


Questions
1. Beside the tower of Pisa, what else were Diotisalvi's works?
2. Why did the government issued a rehabilitation in tower of Pisa?
3. Where is the tower situated?
4. How many steps were there in the tower of Pisa?
5. Who was Bonnano Pisano?


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