The city of Dürnstein and Dürnstein castle ruin are connected by a wall. The castle was built between 1140-1145 by Hadmar I Kuenring and blasted by Sweden under General Torstenson in 1645. You can see a model of the city and the ruins at Dürnstein Abbey.
Dürnstein castle is known from the legend about Richard the Lionheart. The legend tells, that the English King Richard the Lionheart tore up the Austrian flag on the return journey of his crusade and refused to share the spoils of war with Leopold V. Sure, Leopold V. held the English king in the castle 1192-1193. The Royal prisoner could receive travelling singer (troubadours) for his entertainment, resulted in probably later the legend of Blondel singer. His faithful minstrel moved from Castle to Castle, until he discovered his King in Dürnstein, by singing a song verse, the prisoner added. Richard the Lionheart was released after a ransom of 150,000 Silver marks in freedom.
Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.