Leaning tower of Pisa is the element of the medieval city fortifications, which got its name because of significant deviations from the vertical - 1, 46 m.

The tower was built in the second half of the thirteenth century. It was square at the base of a 15-metre Bastion built into the system of city walls. In defence there was a watch tower, and through special openings in the wall, in case of an attack on the enemies poured boiling water or resin.

Due to caving soils, or technological errors in the design tower soon significantly deviated from the vertical. Many residents regarded the incident as a divine punishment for "blasphemous" discoveries of Copernicus. Rumors have spread throughout Europe and came to Rome, where the news about the tower became the main argument in favor of making the work of Copernicus in the list of forbidden books.

With the emergence of towers linked one of the urban legends. In the twelfth century one of the knights of the Teutonic order fell in love with a young girl. They secretly met at night and walked around the city. When they were seen by the residents, insidious rumors quickly spread through the city. Both lovers were punished. The knight ordered the construction of the curve of the tower as a symbol of deviation from the rules of the Church. The leaning tower and to this day is a symbol of sin. Everyone can now check yourself. For this, you need to stand close to the inclined wall, stretching his arms and try to stand in this position. The one who can do it, is sinless.

With the development of artillery, the need for defensive towers fell. In the eighteenth century in the tower of Pisa was opened a women's prison, and within a century it was turned into the smithy and the house gunsmith.

Today in the tower of Pisa has a café and gift shop. The building is an important landmark of the Old town.