by damming the water of the Schwennau and Munkbrarupau. It was supposed to protect the castle and at the same time served as a fish pond for food supply. As a result of the flooding, the former monastery grounds sank completely, the castle and the outer bailey were both completely surrounded by water after the complex was completed. Over the centuries, sediment created a permanent connection between the castle and the outer bailey. In 1962, 1969 and most recently in 2005, the pond was drained so that renovation work could be carried out on the palace facades. The foundations of the monastery church and the remains of a hypocaust system were discovered and excavations were made. Some of the exhibits from the excavations are on display in the castle. Trivia The King of Norway Harald V, the Queen of Denmark Margrethe II, and the Spanish Queen Sophia are all living members of the House of Gluecksburg. Germany's northernmost castle was the setting of the TV-show Der Fuerst und das Maedchen. In the show the castle is named "Schloss Thorwald" and serves as the residence of a fictitious Duke. The first usage of the castle as a movie set was in 1937, when it was used in the Ibsen-production of "Ein Volksfeind" 1977–1982, the Deutsche Bundespost issued a definitive series of stamps depicting German castles. Schloss Gluecksburg was featured on the 10-pfennig stamp, single colour grey. The castle was also featured on the 45-cent stamp of a set of two multicolour commemorative stamps showing castles by the Deutsche Post AG in 2013. Schloss Glucksburg was selected to be one of the 23 castles in the videogame Stronghold. However, the castle in the videogame is only loosely based on the real castle. Literature Henning von Rumohr: Schlösser und Herrenhäuser im Herzogtum Schleswig. Droemer Knaur, 1983. Wolfgang J. Müller: Schloß Glücksburg. Bauform als fürstlicher Machtanspruch. In: Oswald Hauser, Waltraud Hunke, Wolfgang J. Müller: Das Haus Glücksburg und Europa. Mühlau, Kiel 1988, , S. 71–87. Dehio: Handbuch der Deutschen Kunstdenkmäler Hamburg, Schleswig-Holstein. Deutscher Kunstverlag, München 1994. Wolfgang J. Müller: Schloß Glücksburg (Große Baudenkmäler, Heft 145). 19. Auflage, München/Berlin 1995. Adrian von Buttlar, Margita Marion Meyer (Hrsg.): Historische Gärten in Schleswig-Holstein. 2. Auflage. Boyens & Co., Heide 1998, , S. 265–269. Johannes Habich, Deert Lafrenz, Heiko K. L. Schulze, Lutz Wilde: Schlösser und Gutsanlagen in Schleswig-Holstein. L & H, Hamburg 1998, . Eva von Engelberg-Dočkal: