Meistersel Castle is a ruined castle near Ramberg on the outskirts of the Palatinate Forest. It is located on a 492-metre-high hilltop that towers above the Modenbach valley near the Three Beeches pass (Drei Buchen) on the road from Ramberg to Edenkoben.
Meistersel Castle is one of the oldest castles in the Palatinate. It was built in the 11th century and mentioned first time in 1100 and it was probably built to protect Trifels imperial castle. In the 12th century, the Meistersel was given as a fief to knightly servants. The core of today's complex was built around 1300 after fundamental renovation work. During the Peasants' War in 1525 the castle was looted by rebels and subsequently abandoned.
Its name is derived from the words Meister ('master') and Saal ('hall') and hence the term Meister des Saales or master of the hall/chamberlain. It is likely that it was a seat for ministeriales of the imperial castle of Trifels. Its other name, Modeneck, comes from the name of the nearby stream.
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.