Burg Lahneck is a 13th century castle on the banks of the Rijn, at Lahnstein.The castle is well-known by the death of Idilia Dubb in June 1851. In her holidays the 17 year old girl mounted the high tower of castle Lahneck, when suddenly the wooden stairs collapsed behind her. Nobody heard her crying and calling on the point of the tower, because it was surrounded with an insurmountable wall 3 meters high. She was only found after years in 1860, her diary hidden in the walls some weeks later. The last sentences in her diary: All I know is that there is no hope for me. My death is certain. … Father in heaven, have mercy on my soul (drawn down with two hearts).