Built at the end of the 15th century close to the Basilica, the central part was built on a plan by M. Codussi. On the terrace at the top of the Tower, two dark bronze figures, the Moors strike the hour against a large bell. 
Of notable interest is the complex clockwork mechanism and the great gold and blue enamel clock-face that indicates the hour, the phases of the moon and the motion of the sun.