The origins of Gesualdo Castle can be traced back to the Middle Ages during the Lombard conquests in southern Italy in the 7th century. It was founded either by the legendary Knight Sessualdo or by Radelchi, Prince of Benevento, as a defensive outpost. The first documented records date back to the 12th century under Norman rule, with William of Altavilla as the first lord. The castle gained importance during the Norman-Swabian era and became a prominent fortress in the region.
Carlo Gesualdo, a descendant of the Norman line, transformed the castle into a Renaissance-style mansion in the late 15th century. Over the centuries, the castle suffered damage and looting during various conflicts, including the Franco-Spanish War and the arrival of French troops in 1799. It underwent significant renovations in the 19th century and was designated as a site of historical and artistic value in 1913. The castle was severely damaged in the 1980 Irpinia earthquake and has undergone ongoing restoration efforts. Currently, a portion of the castle is open to the public, and future plans include establishing a polyphony education high school within its premises.
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.