Arcinazzo Romano is a comune in the Metropolitan City of Rome in the Italian region Lazio, located about 50 kilometres east of Rome.
Arcinazzo Romano borders the following municipalities: Affile, Jenne, Piglio, Roiate, Serrone, Subiaco, Trevi nel Lazio. It was called Ponza until 1891.The area of Arcinazzo includes a wide plateau, a popular holiday resort; the plateau is home to the remains of a Roman villa, the hunting residence of emperor Trajan.
Wikipedia https://en.wikipedia.org/wiki/Arcinazzo_Romano
Coordinates 41°52'46.999" N 13°6'51.811" E