Schloss Rubein was probably built in the 13th century by the lords of Rubein. The first document of castle dates from 1220. The major restoration took place after 1875 by the Count Brandis and later by Countess Anna Asseburg-Wolff-Metternich and his husband. Their descendants are still in possession.
The 21m high tower was erected for the defensive purposes and the castle was built around it. during The late Gothic chapel dates from 1455. The imposing structure, surrounded by a 5-hectare park, now houses a hotel and is used for conferences.
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.