The Lazzaretto of Ancona, also called the Mole Vanvitelliana, is an 18th-century building constructed on an artificial island for the purpose of serving as quarantine station and Leprosarium for the port town of Ancona, Italy. The pentagonal building rises on an artificial island in the port which is now connected to the mainland by three bridges. It was a project commissioned by Pope Clement XII, designed by the architect Luigi Vanvitelli, and built (1733−1743).