Castle of Alba de Aliste is located on the margins of the river Aliste. Today it lies in ruins. In the 12th century it belonged to the Knights Templar. Don Álvaro de Luna owned it in the 15th century. It became the capital of the county of Alba y Aliste under Enrique IV.
It was built on the remains of an old Vetton fort in the 12th century and renovated in the 15th century, retaining only some walls and a tower, although it had an irregular plan of 30 meters wide and 70 long, four towers, barbican and crenellated.
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.