The Castle of Rullingen (also called Rolengen, Rolenghem and Ruelingen) is located in the valley of the Herk in Rullingen, a hamlet of the Belgian town of Borgloon. The oldest known lord of Rullingen was Eggebertus van Rolengen, who witnessed the foundation of the abbey of Averbode by his liege lord, Arnold II van Loon. The medieval stronghold was replaced, perhaps between 1623 and 1638, by a typical Maasland water castle. It consisted of a U-shaped courtyard and an L-shaped mansion with a protruding square corner tower. In the 18th and 19th centuries, the castle was adapted to the then prevailing housing standards; a coach house was built. Between 1770 and 1850, an English garden was laid out to the south. In 1912 knight Pangaert d'Opdorp bought the castle. The farm behind the castle and a service wing disappeared in a fire in 1920. The building was then thoroughly renovated, a garden was laid out and the canals partially filled in. A new coach house was built with the demolition material. Since 1978, the provincial government of Limburg has owned the building. Until 2013, the building was operated as a hotel-restaurant. In 2014, the castle was sold by the Province of Limburg to NV Livaco in Sint-Lambrechts-Woluwe, one of the companies of the project developer Kolmont of the Tans family in Hasselt. A real vineyard can be found on the domain of Rullingen for several years now. In May 2005, one hectare of field was reserved for planting. The vineyard consists of 3000 vines pinot gris, 2000 pinot blanc, 600 pinot noir (Sankt Laurence), 200 Riesling and 200 Kerner. The wine from Rullingen Castle is an organic wine. Unlike "regular" wine, which uses chemical agents, the grapes used in organic wine are grown without the use of any chemical compound. Fertilizers, highly toxic weed killers and all chemical insecticides and fungicides are STRICTLY PROHIBITED in this crop. Organic cultivation is therefore 100% environmentally conscious.