The wonderful environmental mosaic of the Park is enriched by important prehistoric and archaeological finds witnessing the human presence in the area of Circeo since ancient times.
As a matter of fact, the several caves and natural shelters offered by the promontory are very important prehistoric sites where, besides the discovery of a skull belonging to the Neanderthal Man (prof. Blanc, Grotta Guattari, 1939), several evidences (fossil remains, lithic finds, etc.) that can give an idea of the human presence and activities over the prehistoric ages have been found.
The archaeological finds mainly date back to the Roman age, both Imperial and Republican, when the considerable technical skills of the period led to the creation of refined residential and hydraulic works of engineering, like the port-channel of Torre Paola or the thermal-residential structure of Domitian's Villa, preserved until present times.
Several important artistic finds now preserved in various museums come from Domitian's Villa: Kessel's Apollo and the Faun with concert flute, which used to decorate the interiors of the imperial residence.