Taggenbrunn Castle site was already used as a Celtic-Roman hillfort settlement in the 6th century BC. The first mention of current castle dates from 1142. The castle was destroyed in 1258 in a rebellion agains Duke Albrecht I and rebuilt ten years later. Later the castle was owned by the Holy Roman Empire and archbishopric of Salzburg. The castle was expanded in 1497-1503. In the 17th and 18th centuries Taggenbrunn was left to decay. Today there is a wineyard and restaurant.
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.