Pisa is a city located in the Tuscany region of Italy, known for its rich history and beautiful architecture. It is most famous for the Leaning Tower of Pisa, a freestanding bell tower that leans due to unstable foundation soil. The city is also home to the Pisa Cathedral and the Baptistery, both of which are part of the Piazza dei Miracoli, a UNESCO World Heritage site. Pisa has a population of around 90,000 residents and is a vibrant university town, hosting the prestigious University of Pisa. The city is situated along the Arno River and offers a mix of historical sites, cultural events, and scenic views, making it a popular destination for tourists.