Santa María Jus del Castillo Church was built in the 12th century on the site of a synagogue, since this was then the Jewish quarter of the city. Its original name was Iglesia de Santa María y de Todos los Santos. It was used as a church until the 17th century. Today it is used as an Interpretation Center of the Romanesque and the Camino de Santiago. It was declared a Site of Cultural Interest.
It is a church with a single nave. The apse and the central body of the church are Romanesque, but the façade and tower are from the Baroque period.
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.