The Leaning Tower of Pisa is one of Italy’s most iconic landmarks, located in the city of Pisa. This freestanding bell tower began leaning during construction in the 12th century due to unstable foundation soil, and has since become world-famous for its unintended tilt. Completed in the 14th century, it stands as a masterpiece of Romanesque architecture and attracts millions of visitors each year who come to admire and photograph its unique lean.