The origins of Hernen lie to the west of the present castle, next to the river Elst. That is where the first motte castle of Hernen was sited, and remained in use until the 12th/13th century. This was possibly also the fortress of the Lords of Hernen, who first appear in the records in 1247. The lord received income through taxes and special privileges, such as the milling rights. This income enabled him to extend his castle, which in turn increased his status.
Around that time, Hernen was partly in Cleves and partly in Gelderland. In the 14th century, work started on the construction of the present castle, which was sited on the Gelderland part. Later, everything came again under one estate. The east wing and the monumental entry gate date from 1555. A special feature is the covered patrol path - quite rare in the Netherlands.
The castle never suffered war damage or natural disasters. In the last century, the lord of the castle hardly ever lived there, leaving the administration to a steward. There was no urge to embellish the castle according to the latest fashion in architecture, and consequently the castle was able to keep its austere, medieval character.
References:The Gravensteen is a castle in Ghent originating from the Middle Ages. The name means 'castle of the counts' in Dutch. Arnulf I (918–965), Count of Flanders, was the first to fortify this place, building a medieval bastion on this high sand dune, naturally protected by the river Leie and its marshy banks. This bastion consisted of a central wooden building and several surrounding buildings, also in wood.
In the early 11th century, the wooden building was replaced by a stone residence, consisting of three large halls that made up three storeys, connected by a stone stairwell. The monumental stone staircase, the light openings, the fireplaces built into the walls and the latrines were signs of considerable luxury and comfort in those days. There was probably also a tower.