The Glehn Castle or manor was established by Nikolai von Glehn on the northern part of the lands of his Jälgimäe Manor to become his new residence. The castle was completed in 1886 and was designed by himself. The castle is surrounded by a park with several buildings like palm house (1900–1910), observatory tower (1910) and sculptures Kalevipoeg (1908), Crocodile (1908), all of those designed by Glehn himself.
After Glehn emigrated to Germany in 1918 the castle was looted and fell into decline. In the 1960s, restoration of the building commenced. The renovated palace was inaugurated on the 24 March 1977.
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.