also known as the Fountain of the Boilermakers, is located at the northern extremity of Piazza Navona. The first one realised the decoration complex based on the mythological theme of the "Nereidi with cupids and walruses", the second one realised the group of marbles "Neptune fighting with an octopus" that takes again the theme of the physical fight that already the Fountain of the Moro had with the fight between the Ethiopian and the dolphin.