Bottna Church dates from the 12th century when the sea level was much higher, possibly reaching the foot of the hill on which the church stands. The church retains the character of the Middle Ages when entrances were on the southern long wall. The door was moved, but the doorway remains, where there is a carved stone relief.The walls surrounding the basilica and parts of the chancel are original. Additions were made to the chancel during the 16th or 17th centuries. The altarpiece, possibly a war trophy from Germany during the Thirty Years' War, was a gift from local man Bishop Johan Wingård. The church bell, cast in 1736, hung in a separate belfry until the present tower was built.
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.