Leaning Tower of Pisa.

The Leaning Tower of Pisa, a stunning 14th-century belltower, stands at 56 meters tall and is famous for its accidental lean due to the unstable soil beneath it. Initiated in 1173, construction faced interruptions for nearly a century, leading to its eventual completion in the late 14th century. This architectural marvel showcases Romanesque and Gothic elements, featuring rounded arches and thick walls, and is part of the UNESCO-listed Piazza del Duomo, which also includes a cathedral and baptistery rich in artistic details. Despite its tilt of 15 feet off vertical, extensive restoration in the 1990s stabilized the tower, allowing visitors to climb its 293 steps for breathtaking views, making it one of Italy's most iconic and visited landmarks.