The Church of the Santissima Annunziata dei Catalani is an example of Norman architecture on Sicily. It dates from the 12th century, when Sicily was under Norman rule. Built on top of the ruins of an older temple dedicated to Neptune, the church is an example of Sicilian Norman architecture with its mix of different cultural elements.
The church displays influences from Arab and Byzantine architecture and also contains Roman elements. Particularly the apse is unusually well-preserved. The name of the church derives from merchants from Catalonia who established a presence in Messina in the 16th century.
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.