ROME

Monuments

Ara Pacis Augustae	Arch of Costantine	Arch of Titus
Castle Sant'Angelo (Castle Lungotevere)	The Catacombs of Priscilla (via Salaria 430)	The Catacombs of San Callisto (via Appia Antica)
Catacombs of San Sebastian (via Appia Antica)	Circus Maximus (via del Circo Massimo)	Column of Marcus Aurelius (Piazza Colonna)
Trajan's Column	The Colosseum (Piazza del Colosseo)	Domus Aurea (via Labicana, 136)
Trevi Fountain (Piazza di Trevi)	Forum of Trajan (entrance from the via 4 November)	Forum of Augustus (via dei Fori Imperiali)
Mausoleum of Augustus	Trajan Markets (via 4 November)	Aurelian Walls
Servian Walls	Vatican City	Argentine Tower Zone
Palatine (via di San Gregorio)	Porta Pia (via XX Settembre)	Porta Portese (via Portuense)
Porta San Paolo (Piazza di Porta San Paolo)	Porta San Sebastian (Via di Porta San Sebastiano)	Portico d'Ottavia (via del Portico d'Ottavia)

Arch of Costantine
Where: Piazza del Colosseo
Among the oldest of Rome's mouments, the Arch of Constantine was erected to commemorate the victory of the emperor over Massenzio, in the battle of 312 a.D. at Ponte Milvio.
Almost 25 meters high, it has three arched passageways, mostly decorated by ornaments taken from other buildings, such as the monuments of Trajan, Marcus Aurelius, Domiziano, Hadrian, and Commodo.
Worthy of note are the stupendous bas reliefs over the central part of the arch and the eight rectangular bas reliefs in the upper part.