Linz Castle is an old customs castle and fortress. It dates back to 1365 and was built by the Archbishop of Cologne, Engelbert von der Mark. After an eventful history, the castle has been under private ownership since 1985. The castle in the heart of the town of Linz on the Rhine is once again a major tourist attraction after undergoing extensive refurbishment.
Today visitors will find catering from the Middle Ages in the Great Knights' Hall, in the tower room and in the inner castle as well as a museum in the dungeon and a Roman glass works.
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.