 It is close to the other communes of Velletri, Rocca Priora, Monte Compatri, Grottaferrata, Albano and Marino.It is the center of the Regional Park known as the "Parco Regionale dei Castelli Romani".Documents from 12th century name Rocca di Papa as "Castrum Rocce de Papa" ("Rock of the Pope Castle"), because Pope Eugene III lived there.