Kong Asgers Høj (King Asgers Mound) is a large passage grave on the island of Møn. It was built in the Late Stone Age (3000 BC - 1500 BC) and has a 10 meters long narrow passage leading into to the grave chamber. The grave chamber is 10 meters long and 2 meters wide and was when in use a common grave. When somebody died the grave was opened, the deceased was buried, and the grave was closed again. Kong Asgers Høj is situated to the Northwest of Sprove on a small hill. The passage grave is open to the public, but it is a good thing to bring some sort of light because the grave chamber is pitch-dark.
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.