Sanct Ilgen unter Turjak is a place, that before the Treaty of Saint-Germain belonged to Austro-Hungary and was situated in the administrative region Windischgraz/Slovenji Gradec.
Sanct Ilgen unter Turjak was formerly part of the German Empire. In the German Empire, the place was called Ilgen am Bachern. The place is now called Šentilj and belongs to Slovenia.