Colonna is the 3rd rione of Rome, Italy, identified by the initials R. III and located at the city's historic center in Municipio I. It takes its name from the Column of Marcus Aurelius in the Piazza Colonna, the rione's main square.
Piazza Colonna and the Column of Marcus Aurelius, from which the rione takes its name
Municipio I is an administrative subdivision of the municipality of Rome, encompassing the centre of the city.
Trastevere
Prati
The seat of Municipio I in Via Petroselli.