Jansgeleen Castle, built as House Spaubeek at a bench in the small Geleen river in the 13th century, was the first seat of the former County of Geleen in the 16th century. It got its name Heer Jansgelene after one of the former owners, Lord Jan Rode van Opsinnich in the 15th century, but was later erroneously renamed as Sint Jansgeleen after St. John the Baptist.
The castle, already in a bad shape at the end of the 19th century, and further damaged by the mine galleries of the nearby big Maurits mine at Geleen in the 1920s, was finally demolished in the 1930s. Only the buildings of the water mill (Jansmolen) and the forecourt (16th century) have remained, now both provincial monuments.
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.