The castle of Montealegre, built in the 12th century, was mentioned for the first time in 1173, when Rodrígo Gutiérrez was appointed lord of Montealegre; together with the castles of Ampudia, Belmonte, Torremormojón, Medina de Rioseco, Mucientes and Trigueros, it formed the defence line of the southern border of the Kingdom of León. The castle was revamped in 1297 by Alfonso Tello Pérez de Meneses, appointed lord of Montealegre by King Alfonso VIII.
In the 13th century, the domain was transferred to the Order of Saint James, which granted a charter to the village in 1219. Further owners of Montealegre were the Albuquerque (14th century), who defended the castle against King of Castile Peter the Cruel in 1354, and the Manuel (15th-17th centuries). The Manuel family maintained in the town one of the most significant Jewish communities in the province. In 1626, Montealegre became a Marquisate, granted by King Philip IV to Martín de Rojas y Guzmán.
The present castle, with its austere and strong appearance, has a slightly trapezial groundplan, with four strong towers at its corners. Three of them are rectangular and the fourth is pentagonal and served as the keep. In the middle of its curtain walls it is fitted with slender circular towers. The height of its walls range from 18 to 24 meters with a thickness of 4 meters. With its functional and horizontal impression it represents an adoption of a Mediterranean-Arab castle, a style known in Europe from the 13th 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.