The Huis Aerdt in Herwen, in the Dutch province of Gelderland, is a historic house, moated and surrounded by pollard willows; it is north of the village of Herwen. Huis Aerdt is partly privately occupied and a company is located there. The wedding hall is used as a wedding location.
The current house of Aerdt is the successor of the medieval castle Ter Cluse, which was destroyed in the 16th century. There are still some remains of the old ter Cluse in and around Huis Aerdt. In 1652 Huis Aerdt was built on top of these remains of Ter Cluse castle. Ter Cluse was probably destroyed by fire during the Eighty Years' War. In the 18th and 19th centuries, the house was the residence of the noble family of Hugenpoth. Even then this was the center of the region, De Heer van Aerdt lived there. He owned a lot of land in the area, with several tenancy farms and he also had a right to wind: he owned the mill rights. His power even extended to The Hague, where he had a seat in the Senate. After Huis Aerdt came into the possession of the Van Dorth tot Medler family at the end of the 19th century, it lost its function in the region.
The survival of the house hung by a thread after World War II, as no one had money to repair the damage caused during the war. When in 1961 the house was transferred to the "Friends of the Geldersche Kasteelen Foundation" for one guilder, everything was restored to its former glory. In the 1970s and 1980s, the Rhine and IJssel Polder District had its office here.