Clairvaux Abbey (Clara Vallis) was a Cistercian monastery in Ville-sous-la-Ferté, 15 kilometres from Bar-sur-Aube. The original building, founded in 1115 by Bernard of Clairvaux, is now in ruins; the bulk of the present structure dates from 1708. Clairvaux Abbey was a good example of the general layout of a Cistercian monastery.
From 1808 to 2023, the grounds were occupied by Clairvaux Prison, a high-security prison. As of 2024, it is in the process of being transferred to new ownership as a site oriented toward tourism.
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.