Sisak Fortress was built following the increasingly threatening and devastating Turkish attacks on the Kingdom of Croatia. The construction works were ordered by the Bishop of Zagreb, the owner of the estate, and lasted from 1544 until 1550.
Having become Bosnian pasha in 1591, Hasan Pasha Predojević launched a few attacks on Sisak. During his last campaign in June 1593, his army of around 12.000 Ottoman soldiers suffered on 22 June 1593 a heavy defeat against the defending joint Croato-Slovene-Austrian forces and he himself lost his life. This battle was a turning point, which meant interruption of further Ottoman conquest.
After slackening of Ottoman pressure on Croatian lands in the 17th century, the fortress changed its owners for a couple of times, being sometimes damaged, but immediately repaired. The last major damage occurred during the Second World War, as the fortification was hit by shells and the northwest tower was partially destroyed.
Present-day fortress houses some collections of the Sisak Town Museum (established in 1951), which include holdings of archaeology, ethnology, cultural history and numismatics.
Sisak Fortress is a triangle-shaped structure, mostly made of brick and supported by stone parts. Each corner of the fortress is reinforced with a round tower covered by conical roof. Towers are connected by the more than 30 metres long thick walls with loopholes. Being on the river bank, the fortress has a natural line of defense from the west-southwest, while the other sides are partially protected by the Sava River in the immediate vicinity, flowing southeast.
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.