Dobczyce Castle was first mentioned in written sources in 1362, but had been fortified since 1311. In the time of Casimir III the Great, the walls were from 5 to 9 meters thick, and the castle was a fortified stronghold. In 1398, the castle was the abode of King Władysław II Jagiełło and his wife Jadwiga. In 1473, for several months, Prince Casimir stayed here after returning from an unsuccessful expedition.
The Lubomirski family, who ruled the castle from 1585, rebuilt the Gothic fortress into a Renaissance residence in the years 1593-1594. The clocktower, chapel and fountain were added. By 1620 the castle had 70 rooms and 3 towers. In the 1960s the site was extensively excavated.
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.