Like most of the castles in the Rhineland-Palatinate, Landeck Castle was built in approximately 1200. It served probably the function of protecting the nearby Klingenmünster monastery. The first documental reference to Landeck Castle was made in 1237.
In the period around 1500 there were castle administrators from the Kurpfalz, the bishop of Speyer and the counts of Zweibrücken. At the end of the 15th century extensive work was done at Landeck Castle. During the Peasants’ War in 1525 it was damaged, but obviously quickly repaired.
In 1570 there was again a change in ownership. After the dying out of the Zweibrücken-Bitch lineage their share of the castle went to the Kurpfalz. It was not until 1709 that the Electors succeded in owning the entire property of Landeck Castle, when the Speyer bishopric gave up the remaining quarter by exchange. The Kurpfalz remained the only owner until the French Revolution. In the 1960’s the castle was extensively restored.
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.