The Leaning Tower of Pisa is a freestanding bell tower located in Pisa, Italy. It is famous for its unintended tilt, which began during its construction in the 12th century due to unstable foundation soil. The tower stands about 56 meters tall and has eight stories, including the chamber for the bells. Construction of the tower started in 1173 and took nearly 200 years to complete, with several interruptions. The tilt was partially corrected during restoration efforts, and today, the tower is a popular tourist attraction, recognized as a UNESCO World Heritage Site along with the Pisa Cathedral and Baptistery.