The Italian city known for its leaning tower is Pisa. The Leaning Tower of Pisa is one of the most recognized structures in the world, famed for its unintended tilt. This architectural marvel was constructed over 199 years and completed in 1372. The tower is part of the Pisa Cathedral complex, which is a UNESCO World Heritage site. Tourists flock to Pisa not only to see the tower but also to explore the adjacent cathedral and baptistery, making it a significant cultural and historical destination in Italy.