The castle-palace of Belalcázar is one of the most representative of the 15th century, when the nobility attempted to demonstrate its social and economic status.
Built entirely of stone blocks, Belalcazar preserves two enclosures: an outer barrier adapted to the irregularities of the land and reinforced with rectangular towers, and the inner rectangular castle-palace with eight towers, one at each corner and another in the center of each side. All eight towers are of average height except for the eastern and principal tower, which rises noticeably above the rest.
In the 15th century, some Renaissance construction was added to improve the accommodations of the palace, which were insufficient in the old principal tower.The castle was built by the magnate Gutierre de Sotomayor, grand master of Alcantara, with the benefices he earned from his various possessions. The castle later passed on to the houses of Benavente and Osuna. In 1811, during the War of Independence, French troops defended the castle against a siege by the duke of Wellington's British troops.The exterior of the fortress is almost entirely intact, but nothing remains of the interior structure.
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.