The Atalaya Castle in Villena, province of Alicante, commands the former frontier between Castile and Kingdom of Aragon.
The fortress was built in an unknown age, although not after the 12th century, since Arab sources mention it in 1172. It has been speculated that the fortification could have been built over a Roman castrum or villa, but no proof of this has been found.
The fortress was an important stronghold on the northern frontier of the Islamic emirate of Iberia. It resisted three different sieges laid by James I of Aragon until finally conquered in 1240.
In 1476 the citizens of Villena, encouraged by the Catholic Monarchs, rebelled against the marquesses. After this event, the castle stopped to be residence of the marquisses, and, together with the city, became a royal possession.
During the Revolt of the Brotherhoods (1519–1523), viceroy Diego Mendoza took refuge in the fortress after his defeat at Gandía, and from here set out the troops which restored the royal power in Spain. During the War of Spanish Succession (1701–1713), 50 Bourbon loyalist troops sustained a siege of 8 days from the biggest part of the Austrian army. The castle was abandoned after the loot perpetrated by the French Marshal Suchet in the course of the Peninsular War (early 19th century). A first restoration was carried out in 1958. The castle is now in good conditions.
Across the upper part of the external wall is a chemin-de-ronde connecting all the towers. Within the inner gate remains have been excavated, which are thought to belong to Sanctuary of the Virgin of the Snow, whose existence was known from written documents.
The fortress has a concentric plan, with an inner and higher line of walls forming a square, and with a rectangular barbican forming a larger inner space in front of the keep. The inner square polygonal in plan, with round towers at the corners, aside from one which is occupied by the keep. These walls were built in the Almohad era, and were covered in the 15th century by order of Don Juan Pacheco. Over this sector is another path leading to the keep. The latter and the towers have rectangular merlons.
The keep is quite higher than the other fortifications. Its lower sections were built in Almohad times using the rammed earth technique. The small entrance leads to a 7x7 m hall, whose walls have an average thickness of 3.5 m, and which is covered by an Almohad ceiling from the 12th century.
The stairs leading to the upper sections house a reproduction of a graffitied khamsa, the original being in Villena's Museum. The mid hall has also an Almohad ceiling. The two upper sections were built in the mid-15th century.
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.