Fountain in Piazza Santa Maria in Trastevere mentioned in documents dating to the second half of the 15th century. A drawing of the fountain appears on the map of Rome made by Pietro del Massaio in 1471, along with a description of the legend of the fountain's origin. According to the legend, which appears in the "Chronicle" of Eusebius, translated and finished by Saint Jerome in the fifth century, on the night of the birth of Christ a fountain of oil appeared miraculously in front of the church, which as a result was given the name "Santa Maria in fontibus." The original fountain was supplied with water
Fountain from the conch shell of the triton. The Piazza Navona became a grand theater of water, with three fountains, built in a line on the site of the Stadium of Domitian. The fountains at either end are by Giacomo della Porta; the Neptune fountain to the north, (1572) shows the God of the Sea spearing an octopus, surrounded by tritons, sea horses and mermaids. At the southern end is Il Moro, possibly also a figure of Neptune riding a fish in a conch shell. In the center is the Fontana dei Quattro Fiumi, (The Fountain of the Four Rivers) (1648–51),