This delightful museum occupies a light-filled palazzo built atop the 2nd-century BC Santuario della Fortuna Primigenia, a vast temple that once encompassed much of what is now Palestrina's historic centre. It has an interesting collection of ancient sculpture and funerary artefacts, as well as some huge Roman mosaics. But the crowning glory is the breathtaking Mosaico Nilotico, a detailed 2nd-century BC mosaic depicting the flooding of the Nile and everyday life in ancient Egypt.