The history of Vallen estate dates from the 14th century. In the 15th century it was owned by brothers Åke and Povel Laxmand. The original castle was destroyed and rebuilt several times in the wars between Denmark and Sweden. In 1800 the castle was destroyed by fire. The current main building was built next year by Otto Wilhelm Burenskiöld. Today Vallen is a horse riding and conference center.
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.