AURELIA, VIA, ancient highroad of Italy, date unknown. It ran from Rome to the sea at Alsium, and thence along the west coast line of Italy, perhaps originally only as far as Cosa, but it was later extended to Vada Volaterrana, and in 109 B.C. to Genua and Dertona by means of the Via Aemilia, though a coast road as far as Genua at least must have existed long before. The name is applied in the Antonine Itinerary to these extensions, and even to the prolongation to Arles. Its line is in the main closely followed by the modern coast highroad.