For the Torre pendente di Pisa1 In the 7 Wonders of the world. Take in more than 200 years, construction is divided into 3 first began building ranges range when August 9, 1173 (1716), it did not appear that anybody is designed. When you create a 3-layer construction is possible, there must be an end to the year 1178 (1721), because the city of Pisa Plaza Hotel into a war. Later in the year 1275 (1818), the Tower of this has been extended again. By the architect Giovanni di SI modules the name Neville (Giovanni di Simone), he added another floor, 4 and it's as if you are athan again. Make the construction must be stopped in the year 1284 (1827), because of the war. The Bell Tower, which was created as the last floor of a Tower located in nearly 100 years of time to eat. By the final Bell Tower of Tower, which was created by Tom come so Andrea Di Pisa (Tommaso di Andrea Pisano), which was completed in the year 1372 (1915) This was during the construction of the first part, just 5 years after the start of construction, it was found that this began leaning tower of North down and for the first time be able to notice the unusual Tower located in the range, with the construction of two additional ranges. But it architects, Giovanni di Xin modular nature still ahead. And why the Tower leans down, experts indicate that because of the ground which was used in the construction of not permitting. Because the soil is mixed sand, chandin and clay mud is not strong enough to support the weight of a large Tower, with the materials used in construction, which is made from limestone and lime with strong resistance properties can bend and various other materials, they were better than the stones or bricks are the causes why Tower of this collapse. But gradually increasing investment property By today. Leaning tower of Pisa Plaza Hotel is approximately 13 degrees sloping down, experts indicate that the tower had a chance to crash the property, of course, by dropping every 20 years this is located down the Tower of 1 inch and predict this will break down the Tower of the collapse in the year 2200 if you are also seeking protection.
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