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Trier
Gallia Belgica · Roman province·Germany·Founded 16 BCE by Augustus
Augusta Treverorum, Roman capital of northern Gaul. Later imperial residence and one of the empire's biggest cities. In 117 CE, a booming provincial capital.
A living German city of around 106,000; its Roman monuments, including the Porta Nigra, baths, and bridge, form a UNESCO World Heritage Site standing throughout the modern town.
Open Trier on the interactive map →Roman Maps shows the empire frozen at 11 August 117 CE, the day Trajan died — its moment of greatest territorial extent. Explore the full map →