Zagarolo is a town and comune in the Metropolitan City of Rome, in the region of Lazio of central Italy. It lies 34 kilometres (21 mi) southeast of Rome, and it borders the municipalities of Colonna, Gallicano nel Lazio, Monte Compatri, Palestrina, Rome, San Cesareo.

Palestrina is a modern Italian city and comune (municipality) with a population of about 22,000, in Lazio, about 35 kilometres east of Rome. It is connected to the latter by the Via Prenestina. It is built upon the ruins of the ancient city of Praeneste.