The Leaning Tower of Pisa or otherwise known as the Tower of Pisa or Campanile di Pisa is located in Pisa, Italy, and is said to be one of the most memorable architectural structures of Middle Ages Europe and also one of the wonders of the world. Although it has many names, it is actually called a steeple or steeple. The Tower of Pisa is one of the four buildings that make up the cathedral complex of Italy called Campo dei Miracoli or Pizza dei Miracoli. The four buildings include a cathedral, a baptistery, a bell tower and the Leaning Tower of Pisa. These four buildings are said to be the most impressive in the art of Romanesque architecture in Italy. The architect of the Leaning Tower of Pisa is said to be Bonanno Pisano, but it is disputed that Guglielmo and Diotisalvi also took part in the design. The Tower of Pisa measures only one-third the height of the Washington Monument, measuring about one hundred and eight six feet on the high side and about one hundred and eighty-three on the low side. This height is considered a miracle, since it was a miracle of medieval engineering. The tower is made of marble and stone and its construction began in 1173 and lasted about two hundred years until 1372. It is considered a miracle thanks to medieval engineering. The construction of the tower took a long time due to a series of wars. The tower is composed of eight floors, two hundred and seven columns, two hundred and ninety-seven steps that spiral inside, two hundred and eleven arches and seven bells. The tower was designed to be like any other tower, perfectly vertical. Construction of the building was built in several stages. The first phase consisted of the construction of the first three floors. Construction of the ground floor began in August 1173, construction of the ...... half of paper ......ed and it was claimed that it was the first time in history that the tower stopped moving. For safety reasons the tower was closed from 1990 to December 15, 2001, which caused financial problems. The design process alone cost twenty-five million taxpayer dollars. Because the tower was closed to tourism for that period of time it was said that Pisa would lose approximately two million dollars in revenue per year. In conclusion the Tower of Pisa today is considered a miracle in many different ways. The land on which the tower was built was very unstable and difficult to work with later to save this historic building. Soil extraction was the successful process that saved the Tower of Pisa from collapse. Professor Burland, who oversaw the restoration, believes the tower will remain in its current condition and continue to be safe for the next two hundred years.