Wéris village well known for its megaliths, including dolmens and menhirs. There is a 'Museum of Megaliths' in the centre of the village. Listed as an exceptional heritage site of Wallonia, The North Dolmen of Wéris is part of a megalithic field stretching about 8 km long and 300 m wide. In the current state of research, this megalithic field consists of two covered walkway dolmens with associated menhirs, and six sites signaled by lone menhirs.
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.