The Vichtenstein castle sits above the Danube valley opposite to the market municipality of Upper Cell (Lower Bavaria). The castle is in the centre of the municipality Vichtenstein. There is no documentary for the construction of the castle but it is believed to have been started around the year 1100. The castle was an administrative centre of the Bishopric of Passau and in the 14th century it was mortgaged several times until it became the property of the counts of Schauberg.
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.