If you stand on the plateau on which the Hünenburg, probably built around 1170, once stood, you can imagine the strategic importance that the castle had. The mountain drops steeply towards the Weser and was therefore easy to defend. There was probably a moat towards Rumbecker Berg. Except for a few barely visible foundations and a collapsed area, there are no remains. On a display board on the edge of the area you can read an interesting reconstruction of the likely picture and interesting facts about the history. Konrad von Roden, the builder, and Adolf von Holstein and Schauenburg (now Schaumburg) were actually partisans of Heinrich the Lion, who refused to follow Friedrich Barbarossa during his Italian campaign and therefore fell out of favor. In the war that followed, both counts fought alongside Henry the Lion until Adolf von Schauenburg switched sides. In the subsequent dispute between the two counts, Count Adolf destroyed the Hünenburg around 1181.