The Leaning Tower of Pisa or otherwise known as the Leaning Tower of Pisa or Bell Tower of Pisa is located in Pisa, Italy, and is considered one of the most famous architectural structures most memorable of medieval times. Europe and also one of the wonders of the world. Although it has many names, it is actually called a bell tower or campanile. The Leaning Tower of Pisa is one of four buildings that make up the Italian cathedral complex called Campo dei Miracoli or Pizza dei Miracoli. The four buildings include a cathedral, a baptistery, a campanile and the Tower of Pisa. These four buildings are considered the most impressive of the art of Romanesque architecture in Italy. The architect of the Leaning Tower of Pisa is believed to be Bonanno Pisano, but there is controversy that Guglielmo and Diotisalvi also participated in the design. The Tower of Pisa is only one-third the height of the Washington Monument, measuring about one hundred and eight-six feet on its high side and about one-hundred and eighty-three on its low side. This height is considered a miracle, as it is a miracle of medieval engineering. The tower is made of marble and stone and its construction began in 1173 and lasted for about two hundred years until 1372. It is considered a miracle due to medieval engineering. The construction of the tower took a long time due to a series of wars. The tower consists of eight stories, two hundred and seven columns, two hundred and ninety-seven spiral steps 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 constructed in stages. The first stage consisted of the construction of the first three floors. Construction of the ground floor began in August 1173, construction of the ...... middle of paper ......ed and it was stated that this was the first time in history that the tower stopped moving. For security reasons the tower was closed from 1990 to December 15, 2001, which caused financial problems. The design process alone cost taxpayers twenty-five million dollars. As the tower was closed to tourists during this time, it was said that Pisa would lose around two million dollars in revenue per year. In conclusion, the Tower of Pisa today is considered a miracle in many ways. The ground on which the tower was built was very unstable and difficult to work with later to save this historic building. Soil mining was the successful process that prevented the collapse of the Tower of Pisa. Professor Burland, who oversaw the restoration, believes the tower will remain in its current state and continue to be safe for the next two hundred years..