The Nowy Sącz Royal Castle is partially restored ruins of the castle. The edifice was built by king Casimir the Great in 1350-1360 on a slope within the fortifications of Nowy Sącz, at the confluence of two rivers Dunajec and Kamienica. Initially the castle had two corner towers, a keep and a residential building. The structure was separated from the city by a moat and a wall.
Among the notable inhabitants were king Louis I of Hungary and Saint Queen Jadwiga of Anjou. A frequent visitor to the castle was Jogaila (king Władysław Jagiełło). In the following centuries the castle hosted fewer Polish monarchs and became the seat of local starosta. Between 1611-1615 the castle was reconstructed in the mannerist style for Sebastian and Stanisław Lubomirski according to design by Maciej Trapola. The castle had already 40 well equipped rooms at that time. During the Deluge in 1655 the castle was almost completely destroyed by Swedish-Brandenburgian troops. Since that time, the uninhabited building began to fall into disrepair.
The structure was destroyed again in 1945, at the end of World War II, when it was used as a German ammunition store and was the site of mass executions. There are also the remains of the city walls nearby.
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.