The Pisonian Villa dates back to the first century BC. Archaeological surveys carried out in the late 1980's uncovered a length of lead water piping which was found to have the inscription of Lucius Piso.

Based on this in-situ find, the villa has been identified as belonging to the powerful and wealthy aristocratic family Piso which organized a conspiracy against Emperor Nero. The plot was discovered and the family dispossessed. The villa, thus, came into the hands of the Emperor.

Today guided dives follow a pre-established route around a spacious courtyard of ca. 95 x 65 m along which it is possible to admire arcades and passages. Along one side of this area are the thermal baths, on the other are several rooms which served as a lead through to the maritime area and the large fish breeding pools beyond.