Jablonec nad Nisou is a place, that before the Treaty of Saint-Germain belonged to Austro-Hungary and was situated in the administrative region Gablonz a. d. Neiße.
Jablonec nad Nisou was formerly part of the German Empire. In the German Empire, the place was called Gablonz an der Neiße. The place is now called Jablonec nad Nisou and belongs to Czech Republic.