Schnaditz Castle was probably built around 1237 into a marshland area. The longest time (1463–1655) the family members of the von Zaschnitz lived there, also related to the Steuben family through marriage. Tietzen von Zaschnitz undertook numerous renovations and new buildings at the castle in the mid-15th century..
Immediately after the purchase in 1655, Ludwig von Wuthenau carried out extensive construction work on the castle, which had run down during the Thirty Years' War. Today it is in dilapidated state.
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.