The Astronomical Observatory of Rome is one of twelve Astronomical Observatories in Italy. The Astronomical Observatory of Rome (OAR) was established in 1938, inside the 19th-century Villa Mellini on the hill of Monte Mario in Rome. OAR is responsible for the management of the “Museo Astronomico e Copernicano” (Astronomical Copernican Museum – MAC), in the ground floor of Villa Mellini