The Piazza Mastai Fountain is located in the middle of the square with the same name in the Trastevere district in Rome.
Piazza Mastai Fountain Rome
Both the fountain and the Manifattura, a building in the Piazza Mastai, were designed by the architect Antonio Sarti.
A second architect, Andrea Busiri Vici, was responsible for the fountain’s actual construction, which consists of an octagonal vessel on three steps.
The coat-of-arms of Pope Mattei is depicted on the monument and in its center there is another basin on a pedestal held high by 4 dolphins. On top of that vessel 4 lion’s heads spout water.