The Church of St. Lawrence was built in the 1380s to replace an earlier wooden church. The tower has been added in 1467, and the wall paintings are from the beginning of the 16th century. The church has been reconstructed in the 17th century and the beginning of the 18th century. The remodeling has been done in the 19th century. The altarpiece was painted by B. Reinhold in 1876. The bell dates from the beginning of the 13th century.
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.