Dybäck estate was first mentioned in the 1300s. It was owned by several Danish noble families like Munck, Bille and Marsvin. In 1684 it was divided between Jorgen and Christian Bille. Their family owned the estate until 1857.
The oldest building is a barracks, built in the late 1400s. The main building was built in the 1500s and enlarged about hundred years later. Today Dybäck is privately owned and not open to the public.
References: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.