Jurisics Castle, named after Croatian nobleman Nikola Jurišić. The oldest part was built in the 13th century. The inner castle originally of Gothic style was extended later on. This building complex served as an estate castle and was also converted in the Renaissance and Baroque era. The character of the two islands still can be observed: it is visible that the fortress and the interior of the castle were surrounded by a moat.
During the Little War in Hungary, Pargalı İbrahim Pasha under the command of Suleiman the Magnificent laid siege to the castle in 1532. Jurišić and less than 1000 men defended the castle for 25 days without any artillery, despite 19 assaults.
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.