The Neolithic passage grave (a tomb where the burial chamber is reached along a distinct, and usually low, passage) of Luttra is one of the best preserved of its kind in Västergötland. Still time has not been acting too gracious on this site, this ancient tomb is damaged and even partly destroyed. It only has one roofblock left, and the passage is just a metre long - it originally used to be longer. But it is, nevertheless, an impressive witness of a distant past, being as old as some of the Egyptian pyramides.
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.