Gavi was built by incorporating a pre-existing castle built, according to legend, at the time of the Saracen occupations and anointed by Princess Gavia who had established her residence in that location. The first document that testifies to the existence of the castle is a notarial act dating back to the year 973.
The castle remained the property of the Genoese, albeit with ups and downs, at least until 1418 when it passed first to the Milanese Lordship of the Visconti, then to the Fregoso family and finally to the Alexandrian Guasco, lords of Francavilla.
Over the centuries the transformation from castle to fort has been slow but constant: the first radical interventions on the original structure were made in 1540 by the military engineer in the service of the Republic Giovanni Maria Olgiati.Disarmed in 1859, the fort was transformed into a civil penitentiary. During the First World War it was used as a prison camp for the Austro-Hungarians, while during the Second World War it was used as a prison camp for Anglo-American officers. The fortress can be visited in the various main rooms.
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.