Pisa leaning tower - The most unique architecture on the planet

Pisa's leaning tower in Italy is a world famous building. Originally the tower was erected vertically but due to the area of ​​land that Pisa was 'reigning', it gradually subsided, so the tower became increasingly inclined. And it was this unintended inclination that made Pisa famous all over the world, even becoming a world wonder and recognized by UNESCO as a cultural heritage.

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The Pisa Tower began construction on August 9, 1173.

Pisa leaning tower designed by architects Mugahe and Australian Borna Nasi. On August 9, 1173, the construction began construction and it took nearly 200 years, until 1350 it was completed.

When building to the third floor, the Tower of Pisa began to tilt. The reason is that the tower was built on the foundation of a leveled river whose foundation was dug deep, shallow ground. All measures to keep the tower balanced have no results, one must finally stop construction.

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It was not until nearly a century later that the leaning tower continued to be constructed. Architect Giovanni di Simone was assigned this responsibility, and then the tilt on the third floor of the tower was up to 90 cm.

Simone sought to reduce the weight of the upper part of the tower, choose a lighter material, leaving the gap in the wall, the higher the emptiness, the higher the void. But by 1278, when the construction went to the seventh floor, the reconstruction had to be halted because of the war.

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Until 1350, the new Pisa tower was completed, 55.86m high with 8 floors and 294 steps from the ground to the top and shaped like what we are seeing today. A special feature is that the leaning tower does not have a top floor, the bell tower is more vertical than the rest of the tower.

Pisa's leaning tower is located on the Campo dei Miracoli complex in Pisa, Italy, consisting of 4 very important cathedrals (Duomo), bell tower (Campanile - leaning tower), Baptism hall and cemetery (Camposanto).

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In 1590, Galileo Galilei, the great Italian scientist who chose the Tower of Pisa, was the place to conduct the famous experiment of free-falling animals. From the top of the tower, he dropped two objects of different weight. As a result, they landed at the same time, from which he gave the famous physical theory: the mass of the object does not affect the falling acceleration of the object, meaning that heavy or light objects fall at the same speed.

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During the Second World War, Nazi Germany took Pisa as an observatory and shelter. Thankfully Tower of Pisa still resiliently survived the bombs. In the 1990s, the Pisa tower tilted an extra millimeter each year, causing the city government to slash 30 million euros into repairs. People had to relocate 70 tons of land at the slant and replace it with cement with lead to increase the stamina for the tower.

Engineer Michele Jamiolkowski, who is in charge of Pisa's leaning tower conservation project, said it is likely that Pisa will tilt each year more until it collapses in about 300 years.