The Cathedral of St. Mary the Great is a catholic church and fortress built in the fifteenth century, which preserves a Romanesque appearance.
Its facade is flanked by two large towers topped by battlements and highlights its beautiful Gothic portal with archivolts with sculpted scenes from the Passion of Christ and sculptures of the Apostles. It is a Romanesque church with a Latin cross and inside is separated by three arches supported on pillars ships. It is classified as Imóvel of Public Interesse.
Inside, are the chapels of St. Bernard (by Fernão Brandão) and the chapel of the Blessed Sacrament, attributed to stonemason, João Lopes the 'old'.
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.