Holstein (Low German: Holsteen, Danish: Holsten, Latin and historical English: Holsatia)'s the region between the rivers Elbe and Eider. It's part of Schleswig-Holstein, the northernmost state of Germany. Holstein once existed as the County of Holstein, the later Duchy of Holstein, and was the northernmost territory of the Holy Roman Empire. The history of Holstein's closely intertwined with the history of the Danish Duchy of Schleswig. The capital of Holstein's Kiel. Holstein's name comes from… (More on Holstein)