Vianne is a commune in the Lot-et-Garonne department in southwestern France. The territories of Aquitania and Gascony were highly desirabl…Vianne is a commune in the Lot-et-Garonne department in southwestern France. The territories of Aquitania and Gascony were highly desirable lands and in order to protect and also control the people living there a series of fortified villages, “bastides” were founded from about 1229. Where Vianne now lies already existed a village, Vilalonga, with a mill and a dam on the river Baïse. The village also had a church from the 12th century.