The Church of Our Lady was initially dedicated to St. Michael. Its original form dates from the year 1439, and in the 17th century it was restored. Hence its exterior and interior are significantly baroque.
Next to the central altar from the 18th century, there is a painting of Mary with the Child. The church is richly decorated with four paintings representing the stages in the life of St. Augustine. They were initially attributed to F. Fontebasso, but today they are considered to be the work of G. Agnelli, a pupil and successor of the great Piazzeta. The wall intarsia and the wooden frame, made by the Venetian carver Brustolone, are also worth mentioning.
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.