Alesia was the capital of the Mandubii, one of the Gallic tribes allied with the Aedui. The Celtic oppidum was conquered by Julius Caesar during the Gallic Wars and afterwards became a Gallo-Roman town. Modern understanding of its location was controversial for a long time; however, it is now thought to have been located on Mont-Auxois, near Alise-Sainte-Reine in Burgundy, France.