A Ducal fountain, built in 1648 by Duke Pietro Farnese.
The fountain is located in a clearing (Piazza Fontana del Duca) not far from the Museo della Terra. It consists of an octagonal stone basin, with a pyramid-based support in the centre that supports a basin from which water flows out. There are emblems on the faces of the basin, except for one on which an inscription in Latin is engraved and means:
"To the immortality of Duke Pietro Farnese, son of Mario, who reigns amiably, the community of Laterans dedicates a new spectacle of abundant water, a perpetual pledge of joy to the decorum of the duchy and to the relief of the citizens, in the year of Christ 1648."
