In the Middle Ages, Den Dool castle served as a summer residence for the abbots of the Abbey of Sint-Truiden. The first mention is from 1282. Around 1340 the first abbot, Amelius van Schoonvorst, was there as a refugee during the wars of Liège against prince-bishop Engelbert van der Mark. In 1361 the castle and farm were burned down by knight Hendrik van Halbeek. The castle was restored between 1443 to 1470. and again in 1522. It became a fortified mansion with a ring wall with towers and a deep canal.
Further enhancements were carried out by Abbot Hubertus van Sutendael (1638-1663), who had an entrance gate built in 1621 and a castle chapel in 1649. The complex was transformed in a classical style in the 18th century.
Den Dool was occupied by German soldies in the first and second World Wars causing damage to buildings. Since 1994, De Dool Castle Brewery has been located in the farm of the castle. Various restoration work was carried out in the following years.
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.