Formerly known as Grand-Quai, Quai Henri-IV in Dieppe is lined with historical buildings from the 17th and 18th centuries. It houses, among other things, the college of the Oratorians of 1614 and its chapel built on the site of the house of the Norman Medici Jehan Ango, adviser to the King and important shipowner of the 16th century. A monumental fountain on the ground refreshes visitors and locals in summer. In the shape of a circle, its multiple water jets come out of the ground in an aquatic ballet.