The remains of the Roman public baths in Mamer have been reconstructed. During the Gallo-Roman era which lasted until about 450, the Romans built and maintained a number of roads in the area including the Kiem (Latin caminus, road) linking Trier to Reims through what is now Mamer. Mambra was a Romanvicus centred around a villa with thermal baths, sited on the banks of the Mamer River at the eastern end of today's Mamer. The Roman settlement was burnt by Germanic invaders around 276.References:
Built around AD 90 to entertain the legionaries stationed at the fort of Caerleon (Isca), the impressive amphitheatre was the Roman equivalent of today’s multiplex cinema. Wooden benches provided seating for up to 6,000 spectators, who would gather to watch bloodthirsty displays featuring gladiatorial combat and exotic wild animals.
Long after the Romans left, the amphitheatre took on a new life in Arthurian legend. Geoffrey of Monmouth, the somewhat imaginative 12th-century scholar, wrote in his History of the Kings of Britain that Arthur was crowned in Caerleon and that the ruined amphitheatre was actually the remains of King Arthur’s Round Table.
Today it is the most complete Roman amphitheatre in Britain.