Homburg Castle was built in the early 1170s by the Lords of Hohenberg, who were Würzburg ministeriales. Through inheritance it passed to the Bickenbach family in 1381. In 1469, the community along with the Homburg and the surrounding places was sold to the Prince-Bishopric of Würzburg.
The current appearance dates from the 13th and 15th centuries. Homburg was badly damaged by fire in 1680 and started to decay. Today ruins are open to the public.
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.