San Felice Circeo is a town and comune in the province of Latina, in the Lazio region of central Italy. It was an ancient city called Circeii. It is one of I Borghi più belli d'Italia. It is included in the Circeo National Park. Sites include the Grotta Guattari, one of the oldest Neanderthal sites in Italy, in which remains of nine Neanderthals were discovered. Capo Circeo Lighthouse is 3 kilometres from the old town.