The first reference to a castle in the village of Penne dates from 825 AD and its first known señor was Geoffroi, mentioned in 1096 in documents related to Raymond, Count of Toulouse. Throughout the Middle Ages (5th to 15th centuries) the site of Penne was of military strategic importance, being situated on the borders of the provinces of Albigeois, Quercy and Rouergue, with its fortress perched atop a cliff overlooking the River Aveyron.
The castle remained in use, seeing repeated conflicts, such as the Hundred Years War(1337-1453) between England and France, and the French Wars of Religion (1562–1598) between Protestants and Roman Catholics during which it was partly destroyed. It was then abandoned for approximately 400 years.
The remains of the castle include the dungeon, the ramparts and a chapel.
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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.