Rousset is a commune in the Bouches-du-Rhône department in southern France close to Aix-en-Provence. Although Rousset can be traced ba…Rousset is a commune in the Bouches-du-Rhône department in southern France close to Aix-en-Provence. Although Rousset can be traced back to the Romans, the first written mention comes in a 1050 document, under the name of "Rosselun" or "roscetum rosetum". In the Middle Ages, a castle as well as a church and chapels were built, as dwellings increased.