This Roman's Domitienne Way "Voie Domitienne" was built during the rule of the Roman emperor Titus Flavius Domitianus (51-96), who succeeded his brother Titus. Vestiges of the Domitienne Way can be seen where it passed through a number of towns in Provence.
The Domitienne Way crossed the mountains into France in what is now the Hautes-Alpes department, over the Col du Montgenevre (Montgenèvre), past Briançon (Brigantio), Chorges (Caturigomagus) and Gap (Vapincum).
At Cavaillon, two arcades that crossed the Domitienne Way still stand, along with the town's 1st-century Arc de Triomphe.
Ernaginum was the most important road junction in Roman Gaul, and the Roman town here was much bigger than the Roman habitations at Tarascon or Beaucaire. Ernaginum was the junction of the Domitienne Way, the Via Agrippa (Arles - Lyon) and the Aurelian Way (Voie Aurélienne).
The site of Ernaginum today is at the remote crossroad of the D32 and D33 roads beside the little hamlet of Saint-Gabriel, 5 km southeast of Tarascon (lat, long: 43.768333, 4.695833).
West of Glanum/St Remy-de-Provence there was a major Roman road junction at St-Gabriel (Ernaginum). This is now just a simple road junction near the village of St Etienne-du-Grés, to the east of Tarascon.
The Domitienne Way entered Nimes (Nemausus), the largest Roman town of the Narbonnaise, via the Porte d'Auguste, still visible, and went into the current center along the Rue Nationale.
Southwest from Nimes (Nemausus) the Domitienne Way passed by Uchad (Ad Octavum), Vergèze and Gallargues-le-Montueux, where there are several bornes milliaires.
The Roman road crossed the Vidourle over the Ambroix Bridge just past Gallargues-le-Montueux (30 km SW of Nimes) at Ambrussum, a pre-Roman oppidum and then Roman site with thermal baths, south of the current village of Villetelle.
The route continued southwest through Castelnau-le-Lez (Sextantio) and across the north side of the town of Montpellier, although that didn't develop as a town until the Middle Ages.
Continuing southwest, past Montbazin (Forum domitii), Mèze, Pinet and Saint Thibéry (Cessero), where it crossed the Hérault (and the remains of the Roman bridge are still visible, on the right bank just below a dam).
The town of Béziers (Baetiris) became an important Roman wine center, exporting the wines along the Domitienne Way after its founding in 35 BC.
Narbonne (Narbo Martius) was the first Roman colony in Gaul, founded in 118 BC. The Roman road arrived via the Rue de Lattre, crossed the Roman forum at the Place Bistan and left to the southwest via the Roman Pont des Marchands over the Aude. At the main square in front of the Archbishop's Palace, portion of the original Domitienne Way has been preserved, with a map of the route across France, inscribed in stone.
From Narbonne the Roman road passed Fitou (Ad Viscensimum), beside the seaside village of Leucate, Salses-le-Chateau (Ad Salsulae) and Château-Roussillon (Ruscino).
Château-Roussillon (Ruscino) was an important Roman town from the 1st century BC, on the east side of the current Perpignan, on the site of an earlier oppidum at the river crossing of the Têt.
The Domitienne Way crossed through Perpignan, where an oppidum with forum and temple was located at the river crossing over the Têt.