The first stone church on the Lendum site was presumably a Romanesque building built around 1200. In the end of the 16th century, it was so dilapidated that a complete reconstruction was needed. The church was restored as the current red brick building which is whitewashed except the eastern end and the southern wall. The pulpit is from 1640 and the altarpiece from 1722. The beautiful altar rails are made in wrought iron and the Roman baptismal font is in granite.
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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.