Schalun Castle, also known colloquially as Wildschloss, was constructed probably during the second half of the 12th century or around the turn of the 12th century. The first written record about the castle comes from 1237. In it, it was also first referred to by name, as 'Schalun'. Archeological digs made in recent decades have revealed only small amounts of artefacts from the medieval and early modern period, suggesting that the castle might have been cleared and burned down at a later point in its history. In the 18th century, the castle came into the possession of the then Prince Regnant of Liechtenstein. The ownership of the castle ruin was handed over to the Municipality of Vaduz in 1933. Today, the best preserved parts of the castle are its grand hall and the remaining section of its keep.
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.