The Church of Prophet Elijah is a 14th-century church in Thessaloniki, and a UNESCO World Heritage Site.
The church is located in the upper quarter of the old city, and dates to the Palaiologan period, but its original dedication is unknown. In Ottoman times, it was known as the Saraylı Mosque (Palace Mosque or Court Mosque), and through a misinterpretation of this name came about its modern dedication to the Prophet Elijah. It has been traditionally identified as the katholikon of the Nea Moni monastery, built ca. 1360–1370 on the site of a former palace destroyed in 1342 by the Zealot uprising. Modern research, however, has cast doubt on this, since the Nea Moni continued to operate well into the Ottoman period, while the church of Prophet Elijah was converted into a mosque by Badrah Mustafa Pasha immediately after the city's capture in 1430. On the basis of its internal decoration, it has been suggested that the church was the katholikon of the important Akapniou Monastery.
Its architectural style, a variant of cross-in-square church known as the 'Athonite type', is unique in the city, and was always reserved for katholika of monasteries. The careful masonry, of alternating courses of bricks and white ashlar, is also unusual for Thessaloniki and its region; it is copied from Constantinopolitan architecture. Several of its architectural features have also been interpreted as set to create an ambient atmosphere directly connected with the type of worship, through the way natural light is distributed. Fragments of the church's original decoration survive in the form of wall paintings, fine examples of late Palaiologan art, which influenced later paintings in Serbia.
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.