Bodrogolaszi Church with a round-arched apse was built on a hill in the 12th century. Its hole windows justify that besides the religious function, the church was also of strategic importance. The church was originally designated for the Walloons, immigrants occupied with vine-culture in the Tokaj-Hegyalja region. The church was reconstructed several times: in the end of the 18th century, in the second half of the 19th century and the end of the 1970s. The latter was the biggest reconstruction, when the building gained its finals shape.
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.