Yes, there are several fountains and ponds onsite at Milan Cathedral. The most notable is the Fountain of St Lawrence, which was built in 1602 by Giovan Battista Crespi. It stands in front of the cathedral’s south façade and is decorated with sculptures depicting scenes from the life of Saint Lawrence. There are also a number of smaller fountains scattered throughout the grounds, including two large ponds located near the main entrance to the building. These were constructed in 1611 and feature intricate designs that include numerous figures representing religious themes such as saints, angels, and dragons.