The Torre delle Ore in Lucca, otherwise known as the Clock Tower, is the city's tallest tower, dating back to the 13th century, although the clock that gave the tower its identity was added in 1390. The clock mechanism itself has changed over the years, but the one you see today is from the 1750s. Bells in the tower chime each quarter hour.
This tower is historic, and also features in a local legend. A 17th-century woman who sold her soul to the devil in order to remain youthful is said to have tried to stop the clock from chiming when she was supposed to pay her debt. She didn't reach the clock in time, and the devil collected her soul. She is said to haunt the tower still.
The top of the Torre delle Ore is open to the public, though you must climb more than 200 stairs to reach it. You can also see the clock mechanism from the top.