Coburg is a town located on the Itz river in the Upper Franconia region of Bavaria, Germany. Long part of one of the Thuringian states of the W…Coburg is a town located on the Itz river in the Upper Franconia region of Bavaria, Germany. Long part of one of the Thuringian states of the Wettin line, it joined Bavaria by popular vote only in 1920. Until the revolution of 1918, it was one of the capitals of the Duchy of Saxe-Coburg and Gotha and the Duchy of Saxe-Coburg-Saalfeld.