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.
The city walls of Avila were built in the 11th century to protect the citizens from the Moors. They have been well maintained throughout the centuries and are now a major tourist attraction as well as a UNESCO World Heritage Site. Visitors can walk around about half of the length of the walls.
The layout of the city is an even quadrilateral with a perimeter of 2,516 m. Its walls, which consist in part of stones already used in earlier constructions, have an average thickness of 3 m. Access to the city is afforded by nine gates of different periods; twin 20 m high towers, linked by a semi-circular arch, flank the oldest ones, Puerta de San Vicente and Puerta del Alcázar.