Arch of Constantine
Rome's largest triumphal arch is also its greatest recycling job — sculpture scavenged from three earlier emperors, their portrait heads recut into Constantine's.
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One facade tells two stories: 2nd-century naturalism up top, the flat, stubby 4th-century frieze below. It marks Constantine's 312 win over Maxentius at the Milvian Bridge, on the old triumphal route beside the Colosseum.
What to look for
- The eight Dacian prisoner statues on the attic columns — lifted whole from Trajan-era monuments.
- Hadrian's roughly 2-metre round medallions of hunting and sacrifice, set directly above Constantine's cramped frieze of squat, big-headed figures.
- The attic inscription's phrase 'instinctu divinitatis' ('by divine inspiration') — deliberately vague between the pagan gods and the Christian one.
Outdoors between the Colosseum and Palatine Hill on the old triumphal route (Via Triumphalis) — viewable from the street, no ticket.
Arch of Constantine is one of 40 sights worth the detour in Rome, all bundled offline in Voyage GO — download the Rome pack and it sits on your map with no signal, filling your travel passport the moment you walk past.
More to see in Rome
- Vatican CityThe world's smallest sovereign state fits in 44 hectares — you cross its border by stepping over a white line.
- ColosseumAround 50,000 Romans packed this stone oval to watch spectacles staged over a two-level warren of cages beneath the arena floor.
- St. Peter's BasilicaThe world's largest church, built directly over the grave believed to hold St. Peter's bones.
- Sistine ChapelMichelangelo painted the ceiling standing up, not on his back — and cardinals still elect the pope in this room.
- PantheonA 1,900-year-old concrete dome with a hole punched in the top — when it rains in Rome, it rains inside too.
- Stadio OlimpicoOne 70,634-seat bowl, two cross-town tenants: AS Roma and SS Lazio both play here.