Gornja Radgona Castle was built sometime between 1147 and 1182, and served as an important fortress on the border of Styria with Hungary. The town of Gornja Radgona grew up at the base of the hill upon which the castle is built. The castle is mentioned in 1265 as having 40 subservient villages with 355 farms.
In the late 15th century it was the property of one Hans von Stutenberg, who joined Andreas Baumkircher in a rebellion against Emperor Frederick III. When the rebellion failed, the emperor seized the castle. In 1479 it was occupied by troops loyal to Matthias Corvinus who kept control of the castle until Corvinus' death in 1490. Subsequently it was owned by the emperor but leased to different castellans for a long time. In the late 16th century, it underwent a thorough reconstruction.
In 1623 Emperor Ferdinand II sold the castle to Hans Ulrich von Eggenberg. It remained within the Eggenberg family until 1717, when it befell Leopold, count of Herberstein through marriage. In 1789, he sold it to the count of Wurmbrand and it then stayed in the same family until 1914. In 1931, Slovenian authorities took over the castle itself; it has since served a number of purposes. It was damaged in 1945 during World War II but later repaired. It is today rented out and used as a private residence.
References:The Clementinum is a historic complex of buildings in Prague. Until recently the complex hosted the National, University and Technical libraries, the City Library also being located nearby on Mariánské Náměstí. The Technical library and the Municipal library have moved to the Prague National Technical Library at Technická 6 since 2009. It is currently in use as the National Library of the Czech Republic.
Its history dates from the existence of a chapel dedicated to Saint Clement in the 11th century. A Dominican monastery was founded in the medieval period, which was transformed in 1556 to a Jesuit college. In 1622 the Jesuits transferred the library of Charles University to the Klementinum, and the college was merged with the University in 1654. The Jesuits remained until 1773, when the Klementinum was established as an observatory, library, and university by the Empress Maria Theresa of Austria.