It was used with the toll castle, Pfalzgrafenstein Castle in the middle of the Rhein and the fortified town of Kaub on the farthest side to provide an impenetrable anti-toll zone for the Holy Roman Emperor until Prussia purchased the area (1866) and ended this toll in 1867.
The castle is part of the Rhine Gorge, a UNESCO World Heritage Site added in 2002.
The castle transitioned from a hotel into private ownership in 2006.
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