Via Aurelia is an ancient highroad of Italy

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

, the date of the construction of which is unknown. It ran from Rome to Alsium

Arles

Arles is a city and commune in the south of France, in the Bouches-du-Rhône department, of which it is a subprefecture, in the former province of Provence....

, where it reached the sea, and thence along the
south-west coast of Italy, perhaps originally only as far as Cosa

Cosa

Cosa was a Latin colonia founded under Roman influence in southwestern Tuscany in 273 BC, perhaps on land confiscated from the Etruscans...

, and was later extended to Vada Volaterrana, and in 109 BC to Genua

Genoa

Genoa |Ligurian]] Zena ; Latin and, archaically, English Genua) is a city and an important seaport in northern Italy, the capital of the Province of Genoa and of the region of Liguria....

 and Dertona by means of the Via Aemilia

Via Aemilia

The Via Aemilia was a trunk Roman road in the north Italian plain, running from Ariminum , on the Adriatic coast, to Placentia on the river Padus . It was completed in 187 BC...

, 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

Arles

Arles is a city and commune in the south of France, in the Bouches-du-Rhône department, of which it is a subprefecture, in the former province of Provence....

. Its line is in the main closely followed by the modern coast highroad.