Château de Lordat castle dates back to the 9th and 10th centuries (mentioned first time in 970 AD). Around 1244 it was occupied by the Cathars during the crusade against the Albigensians. Lordat family abandoned the castle at the time of religious wars of France. Dismantled by the order of Henry IV in 1582, the castle fell gradually in ruins. The entrance is protected by a square tower which still has its original appearance.
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.