Castle Rijswijk is a 14th century manor house with an early-20th century farmhouse attached to it. Located near the village of Groessen in the province of Gelderland, it was used initially as a defensive structure. Although significantly altered in the 19th century, the castle retains some of its original elements, such as the thick walls, the remains of the tower, the arched basement and the stairs. It was classified as a National Monument in 1966.
The conservation state of the castle has deteriorated considerably over recent years. Both the exterior and the interior are in need of immediate intervention.
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