And more to say on Day 4: Pisa

• The present inclination of the Leaning Tower, Pisas most important sight, is measured to be about 10 percent. The reason behind the inclination still remains a mystery. However, it is believed that the inclination was due to the subsidence of the foundation soil, which was a mixture of varied deposits and clayish material.
• Pisa was the birthplace of the important early physicist, Galileo Galilei.
• Pisa's origins remained unknown for centuries. The presence of an Etruscan (civilization of ancient Italy) necropolis (large cemetery), discovered during excavations in the Arena Garibald (mulit-use stadium) in 1991, allowed to clarify its Etruscan origins.
• The city has two sister-cities in the USA: Niles, Illinois, and Coral Gables, Florida.
• Football is the main sport in Pisa; the local team, Pisa Calcio, currently plays in the Italian Serie B (second-highest division), and has had a top flight history throughout the 1980s and the 1990s, featuring several world class players such as Diego Simeone, Christian Vieri and Dunga.
• Pisa is also known for its excellent university, which was established in 1343 and has become one of Italy's top schools.