Kobersdorf castle was built in 1528 to the site of moated fortress from the 13th century. The history of original castle dates back to the age of Ludwig the German (806-876). The first document of Kobersdorf castle dates from 1229. The fortress withstood the first siege in 1270. 10 years later it was conquered, also 1289 after it was successfully recaptured. Finally, Duke Albrecht I and King Ándrás III concluded the peace treaty of Hainburg in 1291.
In 1319, King Karl Robert sold the estates to Count Simon II of Forchtenstein-Mattersburg. His father and uncle were the brothers of Tota, a spanish court lady of the hungarian King. Both of them have proved themselves in the spanish reconquista and were therefore allowed to wear the spanish eagle in their coat of arms.
About 1430, the artistic decoration of the fortress, from which only the baptistery remained, was made by Count Wilhelm Forchtenstein-Mattersburg, who also changed the main residence of the family from Forchtenstein to Kobersdorf. 1445, Wilhelm put the estates in pawn to the austrish Duke Albrecht VI, who in turn sold the fortress 1451 to his brother, emperor Friedrich III. When Wilhelm died in 1466, he left two daughters. According to the law, the estates has to be given back to the Hungarian Kingdom. But abiding the agreement on ceasefire of 1447, in which Albrecht VI was certified in the posession of Kobersdorf, the estates now were for the first time under Austrian rule.
In 1458 Matthias Corvinus, King of Hungary, conquered Kobersdorf, but according to the peace of Sopron 1463, the fortress remains in the Hands of Austria. Nevertheless, when count Wilhelm Forchtenstein died in 1466, Corvinus gave Kobersdorf to Weisspriach as a present, in consequence of their unfaithfulness for the Habsburg emperor.
The rampart in westward direction and a bigger chapel were erected in 1482. Both of the buildings were held in the style of the late gothic.
In 1529, the Weisspriach family enlarged the fortress of Kobersdorf to a castle and extend the rampart in the style of renaissance. However, in 1683 the turks captured the castle. They ordered the demolishing of the fortress, which existed until then besides the castle.
In 1704, Franz Kéry sold the estate to his brother-in-law Paul I. Fürst Esterházy. Henceforth, the castle lost its function as an residence. This, on the one hand, causes the preservation of the architectural style, but on the other hand, the castle got more and more derelicted. 1809 it was a quarter for french officers, 1876, a fire destroyed the roof, 1914 and 1942-45 a military prison, and 1945-47, a quarter for the russian red army.
Today the castle is known as a location of concerts, exhibitions and seminars. Parts of the castle can be rented for weddings and celebrations. By agreement, guided visitations are possible.
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.