Nicastro's origins trace back to the 9th century, when Calabria was part of the Byzantine Empire, when a fortress called Neo Castrum ('New Castle') was created. In 1057, the area was conquered by the Normans, but Nicastro revolted against Robert Guiscard and his brother Roger. Having dominated the revolt, the new nobiliary had the castle built, which was restored in the 13th century by Frederick II of Swabia. It served as the place of imprisonment of Frederick II's son Henry.
The castle was destroyed by the disastrous earthquake of 1638 and lies today in ruins.
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.