Colonster Castle (Château de Colonster) is a castle near Liège in Wallonia, Belgium, sited on a rocky spur in the Ourthe valley. It was first recorded in the 14th century but its present appearance is that of an 18th-century rebuild by Maximilien-Henri de Horion, which turned it from a stronghold into a pleasure palace, with interiors decorated by Paul-Joseph Delcloche. It and its park were acquired in 1963 by the University of Liège. The building now offers reception areas for corporate hire.
References
Bibliography (in French) Université de Liège. Cahiers du Sart Tilman. Cahier n° 1, Liège, 1963, pp. 47–50. Marc Bouchat, « Le château de Colonster », Bulletin de la Commission royale des Monuments et des Sites, Commission royale des Monuments et des Sites, t. 9, 1980, p. 159-290 (lire en ligne [archive]) Pierre Gathy, Marc Bouchat, Le château de Colonster et son parc, (Université de Liège, collection "Les guides scientifiques du Sart Tilman", n° 5), 80 p., (c.1990).