The ruin of Madenburg Castle is one of the biggest and oldest castle complexes in Rhineland-Palatinate. The castle was built on a cliff on the outskirts of the Palatinate Forest looking towards the Rhine rift valley.
In 1076 the Madenburg castle appears for the first time in a medieval document. Not a lot is known about the early owners of the castle, the counts of Madenburg. At a certain period it belonged to the Empire and to the Hochstift of Speyer. In 1470 Count Palatine Friedrich I. and his troops conquered Madenburg. In 1525, during the Peasants’ War, the castle was seriously damaged for the first time, but later rebuilt and renovated several times. In around 1689 French troops finally destroyed Madenburg.
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.