16BCc. 16 BC–AD 400 · Trier

Augusta Treverorum, Roman Trier

The ruined brick and stone walls of Trier's Imperial Baths, built when the city was a Roman capital — Photo: Gerd Eichmann. CC BY 4.0, via Wikimedia Commons

Founded on the Moselle under Augustus, Trier grew into the largest Roman city north of the Alps. From the late third century it was an imperial residence for the western empire, where Constantine lived from 306 and built the brick audience hall that still stands. Its city gate, baths, amphitheatre and bridge piers survive, beside a cathedral begun in the same century.

Sites

Site 1: Porta NigraThe blackened sandstone city gate of about AD 170, kept because it became a church.Map ↗
Site 2: Constantine's Basilica (Aula Palatina)Constantine's brick throne hall, now a Protestant church.Map ↗
Site 3: Imperial Baths (Kaiserthermen)Walls and underground service tunnels of a fourth-century imperial bath complex.Map ↗
Site 4: Rheinisches Landesmuseum TrierMosaics, the Neumagen wine-ship relief and a hoard of Roman gold coins.Map ↗

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