Valeggio Castle, situated on tall spurs overlooking the River Mincio, bears the typical characteristics of a Della Scala castle, even if it was most probably built on a pre-existing structure. The Scaligeri family realised its strategic importance and erected a castle featuring the typical massive walls, square towers, battlemented keep, draw-bridge and passage guarded by a tower which is shorter than the others. The castle, built in the 13th and 14h centuries, was in full use until 1500, after which it was abandoned once it had lost its strategic importance.
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.