The ruins of the medieval Šášov Castle stand above the river Hron. According to a legend, the lord of the Zvolen Castle had it built for his court joker who saved his life while hunting.
The task of the Šášov Castle was to guard the trade road and to collect toll. It became royal property in the 14th century and part of the dowry of the royal wives. In 1490 the family of Dóczy bought it from Queen Beatrix and reconstructed it into the Renaissance fort. The castle fell in decay after the Rebellion of Estates in 1708. Only some walls survive.
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.