Arco di Costantino.

Geoff Stringer

Arco di Costantino

Ancient Rome

On the western side of the Colosseum, this monumental triple arch was built in AD 315 to celebrate the emperor Constantine's victory over his rival Maxentius at the Battle of the Milvian Bridge (AD 312). Rising to a height of 25m, it's the largest of Rome's surviving triumphal arches.

Lonely Planet's must-see attractions

Nearby Ancient Rome attractions

1. Colosseum

0.08 MILES

Everyone wants to see the Colosseum, and it doesn’t disappoint, especially if accompanied by tales of armored gladiators and hungry lions. More than any…

3. Arco di Tito

0.12 MILES

Said to be the inspiration for the Arc de Triomphe in Paris, this triumphal arch was built by the emperor Domitian in AD 81 to celebrate his brother Titus…

4. Criptoportico Neroniano

0.17 MILES

This 130m-long tunnel (accessible only with the SUPER ticket) is where Caligula is thought to have been murdered, and which Nero later used to connect his…

5. Palatino

0.18 MILES

Sandwiched between the Roman Forum and the Circo Massimo, the Palatino (Palatine Hill) is one of Rome's most spectacular sights. It's a beautiful,…

6. Basilica di Massenzio

0.19 MILES

With its vast arched vaults, this hulking brick construction is the largest building on the Roman Forum. Started by the Emperor Maxentius and finished by…

7. Palatino Entrance

0.22 MILES

About 250m down from the Colosseum, this is the main entrance/exit for the Palatino (Palatine Hill).

8. Domus Flavia

0.22 MILES

Most of the Palatino as it appears today is covered by the ruins of Emperor Domitian's vast 1st-century complex, which served as the main imperial palace…