To be privately owned
Kasteel Loon op Zand

In the Dutch province of North Brabant, Kasteel Loon op Zand today presents itself as a manor house. Originally a medieval keep, it is an example of the transformation from defensive architecture to a residence.
History+
The origins of Kasteel Loon op Zand date back to 1269, when the estate passed to Willem II of Horne. The construction of the first brick castle, a square tower with thick walls, is dated to the years 1383 to 1387. After a conflict with Duchess Joanna of Brabant, another section was added to the complex around 1400. In 1587, the castle suffered damage during a siege by the Dutch army, but was later reoccupied by the Spanish and reinforced with earthen ramparts. A redesign took place in 1663 under Thomas of Immerseel, who transformed the keep into a residential building with guest apartments. The castle received its current appearance between 1776 and 1777 under Louis of Salm-Salm, who had it converted into a modern manor house, with the keep reduced by one floor and the outer bailey replaced by a courtyard with auxiliary buildings.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: Peter van der Wielen
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 51.6246, 5.0744