The sources of the Divonne

The Divonne’s thermalism comes from several sources; the source of Emma - where water springs from the depths of the earth - was probably the same source that fed the Roman underground aqueduct built to bring water to Nyon. Other sources of the Divonne are the Barbilaine, which fed thermal baths for 140 years, the Vidart, the most abundant source, and Ausone which springs just below the casino.