Reggio Calabria Castle was originally built before 540 AD and enlarged by the Normans and later by the Aragonese in 1459. Throughout the centuries it has been restored and enlarged by its conquerors.
The building began to decay in the very early 19th century. Various collapses and demolitions had dotted its history until the recent and radical restoration that brought it back to its original splendor. Today it is the seat of expositions and art exhibitions.
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.