Forum Domitii is one of the oldest Roman settlements in Gallia after Aquae Sextiae (Aix-en-Provence) and Narbo (Narbonne). Having been built ex nono by Cneus Domitius in 117 b.c., it was without geographic references for a long time, known only through Roman historians. 
Recently, after long and painstaking research, it was located near Montbazin, in an area devoted to the cultivation of grapes. Thanks to the numerous sites which became exposed during the cultivation of the soil, we know that Forum Domitii lies beneath the vines.