Trier in Rhineland-Palatinate, whose history dates to the Roman Empire, is the oldest city in Germany. Traditionally it was known in English by its French name of Treves. Treveri The first traces of human settlement in the area of the city show evidence of linear pottery settlements dating from the early Neolithic period. Since the last pre-Christian centuries, members of the Celtic tribe of the Treveri settled in the area of today's Trier. The Romans under Julius Caesar first subdued the Treveri in 58 to 50 BC. No later than 16 BC, at the foot of the hill later christened the Petrisberg, upon which a military camp had been set up in 30 BC and abandoned again a few months later, the Romans founded the city of Augusta Treverorum ("City of Augustus in the land of the Treveri"), which has a claim to being the oldest city in Germany. The honour of being named after the Emperor was only locally shared by Augsburg and Augst in northern Switzerland. Following the reorganisation of the Roman provinces in Germany in 16 BC, Emperor Augustus decided that the city should become the capital of the province of Belgica. Shortly before AD 100, an amphitheatre was built, the signal sign of a city of any importance. By the first half of the second century another major structure, a Roman circus, had reached truly monumental proportions. Trier rose in importance during the Empire's third-century crisis, as the chief city of the province of Gallia Belgica. From 271 to 274 AD, Trier was the second city of the breakaway Gallic Empire, at first under Postumus, who was proclaimed in Cologne, then under his ephemeral successor, Victorinus, who made his base at Trier, where he had rebuilt a large house with a mosaic proclaiming his position as tribune in Postumus' Gallic Praetorian Guard; the city served again as capital under the emperors Tetricus I and II. From the second half of the 3rd century onwards, Trier was the seat of an archbishopric; the first bishop being Eucharius. In the year 275, the city was destroyed in an invasion by the Alamanni.