The castle of Kommern was built around 1350 and was the residence of the duke's bailiff of the Imperial Lordship of Kommern until 1794, serving as an administrative building. The Arenberg nobles, named after their ancestral seat Arenberg, were members of the high nobility and burgrave in Cologne in the 12th and 13th centuries.
Kommern Castle was constructed around 1350 and served as the residence of the Ducal Arenberg bailiff of the Imperial Lordship of Kommern until 1794, thus functioning as an administrative building.
The Arenberg family gained prestige and wealth through iron extraction and processing, clever marriage plans, as well as political and military activities. The castle is a complex of interrelated buildings behind an elaborate courtyard facade, with an adjacent economic courtyard, surrounded by a magnificent landscape park. The oldest part is the four-story rubble stone living tower located on the slope. In the 16th century, the tower was extended by a building that adjoined it to the south. Further extensions occurred in 1753 and 1807. In 1884, a further renovation took place: The facade was designed in the style of early French Baroque. The castle took on a palace-like character with coach houses, stables, utility rooms, and a greenhouse.
Text source (Kommern Castle • Castle » The Green Metropolis - Aachen-Düren-Heinsberg (outdooractive.com))