Church of Our Lady Assumed into Heaven in Ostrzeszów is a late-gothic parish church, founded by King Casimir the Great in mid-14th century. It was initially composed of presbytery and a sacristry. The nave was added in 1360. After the destruction by a fire of the late 15th century and by the Swedish invasion in mid-17th century, the church was rebuilt in 1721–1723. Gothic-style stained-glass windows were fixed in 1939.
The church’s altars are baroque in style – the main one containing a copy of The Assumption of Our Lady by the famous Spanish painter Murillo. The chancel arch features limewood sculptures, probably made by Albrecht Dürer.
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.