Travel to Leaning Tower of Pisa

The world-famous tower built during the Middle Ages is a testament to both human ingenuity and fallibility. The tower tilted because the soil on one side was softer than on the other, and it could not support the tower's weight. The tower continued to tilt more and more for centuries until 1990 when stabilization work began on the foundation. The structure has since stopped its progressive leaning, and the lean decreased from 5.5 degrees to 4.