Our Lady of Leliendaal Church was originally owned by the Norbertine St. Michael's Abbey in Antwerp. The architect was Lucas Faydherbe, he came from Mechelen, was the nephew of Lucas Franchoys the Younger and studied with Peter Paul Rubens in Antwerp. In 1662, the foundation stone was laid. Construction was delayed on multiple occasions, because the façade tilted dangerously forward. Therefore, in 1664, the façade was demolished and rebuilt. In 1670, the first Mass was said and in 1674 it was solemnly inaugurated.
In the early 19th century, during the Napoleanic wars, the church was seriously neglected and half of it was turned into a hospice for the poor of the city. The furnishings were sold and holes were made in the gables for people to be able to see out and over the church to help defend it against attack. A wall was placed in the church between the second and third windows for the establishment of an infirmary.
In 1834, it re-opened under the administration of the Jesuits. Through the cooperation of the nearby Minor Seminary and the Civil Hospices, it was restored and equipped with new furniture and the internal walls were removed. In 1900-1901, the Jesuits changed the floor plan and moved the choir to the gallery in the west of the church. Later in the 20th-century, a sacristy was constructed in the south west part of the church. Also, a grotto to Our Lady of Lourdes was built and new furniture was purchased.
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.