The first Saint-Rémy church, of which only the tower remains today, was built in the 13th century. It was built at the foot of the hill on which stands the castle. The church gradually fell to ruins and the new Saint Rémy church was built in the heart of the town. It was Thomas Bouchard, deputy mayor and treasurer of the parish who laid the first stone in 1522. The gothic centre, surrounded by an ambulatory and radiating chapels, was completed in 1545, but the influence of the first French Renaissance was already visible in the décor.
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.