Saint Aignan Church was originally built around year 400, in the era of pre-Romanesque, by the bishop of Chartres - later his name has given as the name of the church. The church is considered as the most ancient parishes in Chartres. In its history, the church has suffered from several times fire in 12th, 13th and in the early 16th century. Most of the church was rebuilt after the latest misfortune in the 16th century.
The main portal in the center of the front facade was the only part of the church that preserved for the new church. The church also suffered several times of change function during the French Revolution - it was once served as a military hospital, then once became a prison and even as a fodder shop. It finally returned as a worship place in 1822.
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.