Heiligen Dreikönig is a place, that before the Treaty of Saint-Germain belonged to Austro-Hungary and was situated in the administrative region Windischgraz/Slovenji Gradec.
Heiligen Dreikönig was formerly part of the German Empire. In the German Empire, the place was called Heiligendreikönig. The place is now called Sveti Trije Kralji and belongs to Slovenia.