Komotin Castle is a ruined castle in Bosnia and Herzegovina, in the Jajce Municipality. Komotin is believed to have been built in the early 14th century. The last Bosnian King Stephen Tomašević issued a charter which gave Komotin to his uncle Radivoj Kotromanić.
The architecture shows that komotin was a manorial court, but its positioning high on a hill that was difficult to access other than by narrow winding paths made it easily defendable. Once intruders and invaders had gotten up the path they then had a moat to contend with that could only be crossed by drawbridge. The walls of the manor were between 1.2 and 1.4 metres (3.9 and 4.6 ft) thick, with a rectangular shape. Within the walls was also a large and small bailey, plus quarters and accommodations.
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.