Leaning Tower of Pisa (Italy)

Leaning Tower of Pisa, located in Italy, designed by Italian architect Bonanno Pizzato, and a height of 550 meters has been laying the foundation stone to it in 1173. and remained with the Italian architect until the year 1185, and when the construction to the third floor noted that the tower is slightly tilted, he got scared and ran away.the Tower remained on this case throughout the 90 years, came up another engineer and worked on its completion, and make the floors fifth, sixth and seventh straight to compensate for the tilt, and then came the third engineer. and completed the eighth floor of the building, so construction of the tower took about two centuries, however, continued to lean!!!