The Leaning Tower of Pisa has eight storeys, which includes the chamber for the bells. The tower is one of the four buildings that make up the cathedral in Piazza dei Miracoli (Square of Miracles), Pisa, Italy. In Italy, it is usually referred to as a bell tower, but due to its unintentional angle, the rest of the world knows it as the Leaning Tower of Pisa.

Construction of the 185 ft (56 m) bell tower began in August 1173 and took around 200 years to complete. The circular, white marble structure began to lean during the building process, and despite many attempts to straighten the walls, the completed tower leant at a 10-degree angle. The top of the tower is about 17 feet (5 m) away from its intended position.

The ground floor of the tower is constructed from 15 Romanesque arches and the next six storeys contain 30 arches each. The top floor, which is reached by a 297 step spiral staircase, is made of 16 arches. The original architect remains unknown, but several have worked on the tower to prevent it from falling over.

During the 1920s, cement grouting was added to the foundations of the tower. This helped stabilize the building to some extent. Whilst this has made the tower safer, some architects suggest dismantling the structure and rebuilding it again.

More Info: www.towerofpisa.org