Rhineland-Palatinate
The state of Rhineland-Palatinate was founded shortly after the Second World War on 30 August 1946. It was formed mainly from the southern part of the Prussian Rhine Province (the "Regierungsbezirke" of Koblenz and Trier), from Rhenish Hesse, from the western part of Nassau and the Bavarian Rhenish Palatinate minus the county of Saarpfalz. The Joint German-Luxembourg Sovereign Region ("Gemeinschaftliches deutsch-luxemburgisches Hoheitsgebiet") is the only unincorporated area of the state of Rhineland-Palatinate. This condominium is formed by the rivers Moselle, Sauer, and Our, where they run along the border between Luxembourg and Rhineland-Palatinate or the Saarland.
Guttenberg Castle (Palatinate)
From 1680 to 1697 the region was under French hegemony as part of the successes achieved under France's policy of reunionspolitik. From 1792 to 1815 the region was part of the First French Republic and was assigned to the département du Bas-Rhin (Department of Lower Rhine). In November 1815 the area between the rivers Lauter and Queich, including the ruins of Guttenberg, came under the sovereignty of the Empire of Austria as a result of the agreements reached in the Second Treaty of Paris. Finally in April 1816 the region of the Palatinate was surrendered in the Treaty of Munich to the Kingdom of Bavaria, becoming the Circle of the Rhine.