NN (Sveti Duh na Ostrem vrhu) is a place, that before the Treaty of Saint-Germain belonged to Austro-Hungary and was situated in the administrative region Marburg/Maribor.
NN (Sveti Duh na Ostrem vrhu) was formerly part of the German Empire. In the German Empire, the place was called NN. The place is now called Duh na Ostrem Vrhu and belongs to Slovenia.