The Kasti estate was first mentioned in 1488, and it served as the vassal castle of von Uexkülls in the Middle Ages (parts have been preserved in the current main building).
Later on, the manor was associated with the noble families of von Baranoff, von Sivers and von Stackelberg. The manor house was rebuilt as a modern mansion round 1825, when the owner was count Sievers and when it became additional buildings with venice's windows. After burning in 1905 the former look was restorated. In 20. century the house became an office of Kolkhoz "Tasuja", also as cultural center and as shop. For the moment the house stands in private ownership.
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.