Peña de Martos Castle is located in the foothills of Las Cordilleras Béticas, in La Peña hillsides. A great panoramic view of the Guadalquivir valley can be seen from its location.
During the Middle Ages, Martos had one of the most impressive fortresses in Andalucía. It was formed by two castles. One built in La Peña from which its name was taken, and De la Villa Castle built in the very center of the town. La Peña castle remains belong to the fortress that los calatravos (Order of Calatrava) built in 1340.
It has a trapezoidal floor adapted to the meseta surface on which it lays. Its entrance, for security reasons, has a zig-zag design. The enclosure is divided into the Alcázar or castle and the parade ground is protected by a fortified enclosure. The Alcázar, where the keep is raised, is built over a natural pedestal 3m above the parade ground, separated by a natural moat. On the northeast side, the lower part of the castle, there is a reservoir that collects water from the rain that falls over a raised, rectangular area built of stone.
Builders took great advantage of the La Peña meseta surface by building walls where the land sloped most steeply. These walls were built as retaining walls with the parapet at the same level as the parade ground.
The area of Martos has been inhabited since remote times. In the 5th century, the Iberians built the oppidum de Tucci. During the years 17 and 14 B.C, being Emperor Augustus, the Romans founded the colony Augusta Gemella Tuccitana, part of the Bética province. Later on, Muslims built the first fortress that strengthens the enclosure.
From 1228, Martos became the center of La Encomienda of the Order of Calatrava in Jaén Reign. Calatravos strengthened La Peña defensive system and built the Keep. They also built the chapel, reservoir, oven, mill and winery.
The fortress was attacked continuously by Muslims until the conquest of Granada. Once the fortress had no military interest, its decline started.
During the 16th century, La Peña castle was abandoned.
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.