The Cave of Niaux contains many prehistoric paintings of superior quality from the Magdalenian period. It is one of the most famous decorated prehistoric caves in Europe still open to the public. The paintings had been emerging on the cave walls during a long period between 11500 and 10500 years BC. From the very beginning of the seventeenth century the cave was of great interest for tourists, who left numerous traces on its walls.
Though its vast opening (55 metres high) which opens at an altitude of 678 metres, the Niaux cave extends for more than 2 kilometres. The guided tour of the Salon Noir, 800 metres from the entrance, will reveal to you more than 70 exceptional prehistoric paintings.
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.