Via Faustiniana, San Gregorio da Sassola

The cluster is on the eastern side of the Roman Agro at the foot of the Monti Prenestini, with low limestone hills rising nearby and cultivated land around the settlements. The Aniene valley lies to the north within this area. Tivoli is the nearest major historic town, with Villa d'Este and Hadrian's Villa, both UNESCO sites, and with everyday services tied to the eastern edge of Rome. Palestrina is also nearby, with its historic hill town and the sanctuary complex of Fortuna Primigenia. This part of inland Roma province is known for the transition from the plain around the capital to the first Apennine foothills and for long-settled agricultural land.