After this tragedy, Hildburga vowed to become a nun and turned her father's castle into a monastery. After her death, the nuns ruled there in such a cold and merciless manner that the impoverished peasants of the vicinity stormed the castle, destroying it except for a single tower and the foundation stone. Hence the name Nonnenstein. In the vernacular, the name of the hill has been transferred to the viewing tower. From the upper platform, you can see as far as the Hermannsdenkmal in Lippe when the weather is good and the view is clear.