The large underground cistern of the park of San Vincenzino was used to satisfy the water demand of the Roman Villa. Perfectly preserved and open to the public, it is the ideal testimony of the engineering skills of the Romans.
The main room measures 16 meters by 5, the walls are 80 cm wide, made by means of concrete casting. The barrel vault, six meters high, is made of brick. Here, up to 540,000 liters of rainwater were collected. A long tunnel starts at the southern wall, in which it is possible to see the ingenious filtering system of the water which, once purified, entered a system of tunnels of over 70 meters to be distributed in the various sectors of the villa.
The visit inside is particularly suggestive.