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 Roman vicus centred on 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.
