The Byzantine and Christian Museum was founded in 1914, and houses more than 25,000 exhibits with rare collections of pictures, scriptures, frescoes, pottery, fabrics, manuscripts, and copies of artifacts from the 3rd century AD to the late medieval era. It is one of the most important museums in the world in Byzantine Art. In June 2004, in time for its 90th anniversary and the 2004 Athens Olympics, the museum reopened to the public after an extensive renovation and the addition of another wing.
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.