The Leaning Tower of Pisa is one of the most remarkable architectural structures from medieval Europe. The Tower was built as the campanile, freestanding bell tower for the Cathedral in Pisa. Tower of Pisa stands at 60 meters and is leaning at about a 5 degree angle. Although it was designed to be perfectly vertical, it started to lean during construction, because the foundation was built on soft ground that had difficulty supporting the weight. The lean became worse as construction, started in 12th century, was continued for several decades. The structure was completed in the 14th century. There is a 297 step spiral staircase inside the tower leading to the top. The Leaning Tower of Pisa has eight floors.Inside the tower, on the eighth floor, there are seven bells. Each bell represents one note of the musical major scale.