Gmünd Castle dates from the mid-13th century. During the Austrian-Hungarian War in 1487 it was occupied and destroyed by the troops of King Matthias Corvinus after a seven-years-long siege, and rebuilt from 1502 to 1506 under the Salzburg archbishop Leonhard von Keutschach. During the German Peasants' War of 1525, it was again besieged, though not captured. Archbishop Wolf Dietrich Raitenau had the building enlarged in 1607. Devastated by a fire in 1886, it was restored from 1950 and is today used for theatrical performances, concerts and lectures, including a viewing tower and a restaurant.
Château de Niort is a medieval castle in the French town of Niort. It consists of two square towers, linked by a 15th-century building and dominates the Sèvre Niortaise valley.
The two donjons are the only remaining part of the castle. The castle was started by Henry II Plantagenet in the 12th century and completed by Richard the Lionheart. It was defended by a rectangular curtain wall and was damaged during the Wars of Religion. In the 18th century, the castle served as a prison.
The present keeps were the central point of a massive fortress. The southern keep is 28m tall, reinforced with turrets. The northern tower is slightly shorter at 23m. Both are flanked with circular turrets at the corners as well as semicircular buttresses. Each of the towers has a spiral staircase serving the upper floors. The Romanesque architecture is of a high quality with the dressed stones closely jointed.