The Castle of Biar stands on a hillock overlooking the town of Biar. During the Muslim rule had already news but few of the fortress, which began to be relevant to the time of James I of Aragon, remain as border castle under the Treaty of Almizra. The building lost its role during the early modern period and, although rarely used, after was used as a cemetery.
The castle was built in stone with masonry and rammed earth, which was used for the tower of homage. The building consists of two parts. On the one hand, a semicircular enclosure with four towers at the corners thereof, and on the other, a space with four cubic structures and the tower of homage. These towers and other structures are the basic defenses of the castle, and its position high on a rocky hill, the proliferation of small openings in its walls and battlements auction.
The tower of homage is the highlight of the architectural complex. Dating from the 12th century, the tower, situated on one side, was built with mortar mixture of sand and lime and reaches a height of 19 metres. Its plan is square shaped and has three floors, acquiring such an enormous importance. On the lower floor is used the called barrel vault and the other levels, second and third, use the Almohad ribbed vault which, together with those of the neighboring Castle of Villena, are among the oldest in Spain and throughout the Maghreb, as well as the only used in a military building in the Iberian Peninsula.
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.