The Monte Mario observatory.
The Rome Observatory (Osservatorio Astronomico di Roma in Italian) is one of twelve Astronomical Observatories in Italy. It consists of three sites: Monte Porzio Catone, Campo Imperatore and Monte Mario. Part of the Istituto Nazionale di Astrofisica).
Monte Porzio Catone
Monte Porzio Catone is located approximately 20 kilometres southeast of Rome proper.
The Campo Imperatore station (IAU code 599) is located in the mountains of L'Aquila, roughly 115 kilometres northeast of Rome and is between an hour and an hour and a half by car. The Campo Imperatore Near-Earth Object Survey (CINEOS) operates there.
Monte Mario Observatory (IAU code 034) is the only station of the three in Rome itself. It is located at 84 via del Parco Mellini in the northwest part of the city, atop Monte Mario.
Osservatorio Astronomico di Roma (Italian)
Coordinates: 41°55′18″N 12°27′06″E / 41.92167°N 12.45167°E