Origins of the Château Bilquin de Cartier can be traced back to the around 1635, when the Honoré family built a castle on the Sambre river bank. The place had formerly been occupied by a seigneurial manor which was destroyed on 21 July 1554.
In 1667, the unfinished Spanish fortress of Charleroy was captured by Louis XIV's troops during the War of Devolution. As the castle in Marchienne was located in neutral territory (under authority of the Prince-Bishopric of Liège), it was used as a hospital for both French and Spanish soldiers.
In 1695, the castle was bought by Guillaume de Bilquin, a wealthy forge owner, who completes and enhances it. Later the castle became the property of the Cartier de Marchienne family. It was severely damaged by a fire in 1932, and bought over by the municipality of Marchienne-au-Pont in 1938, ending more than two centuries of ownership by the Cartier family.
The castle today hosts a public library on the ground floor (Bibliothèque Marguerite Yourcenar), and administrative services of the Walloon region on the first floor.
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.