Narbonne (French pronunciation: ​[naʁ.bɔn]; Occitan: Narbona, Occitan pronunciation: [naɾ.ˈbu.nɔ]; Latin: Narbo) is a commune in southern France in the Languedoc-Roussillon region. It lies 849 km (528 mi) from Paris in the Aude department, of which it is a sub-prefecture. Once a prosperous port, and a major city in Roman times, it is now located about 15 km (9.3 mi) from the shores of the Mediterranean Sea. It is marginally the largest commune in Aude, although the prefecture is the slightly smaller commune of Carcassonne.