Albi Cathedral is the seat of the Roman Catholic Archbishop of Albi a UNESCO World Heritage Site. It was built as a fortress in the aftermath of the Albigensian Crusade. Begun in 1287 and under construction for 200 years, it is claimed to be the largest brick building in the world.
The present cathedral was preceded by other buildings. The first dated from the fourth century and in 666 was destroyed by fire. The second is recorded in 920 by the name of Saint Cecilia, the present-day patroness of musicians. It was replaced in the thirteenth century by a Romanesque cathedral in stone.
The Brick Gothic cathedral was constructed in brick between 1287 and 1480 in the wake of the Cathar Church, a Christian non-trinitarian dualist movement with an episcopal see at Albi around 1165 AD. Pope Innocent III initiated a brutal crusade (1209–1229) to extinguish Catharism in southern France, with great loss of life to area residents. In the aftermath of the bloodshed, the cathedral's dominant presence and fortress-like exterior were intended to convey the power and authority of the trinitarian Roman Catholic Church. The instigator of the cathedral's construction was Bernard de Castanet, Roman Catholic Bishop of Albi and Inquisitor of Languedoc. Work on the nave was completed about 1330.
The cathedral is built in the Southern Gothic Style. As suitable building stone is not found locally, the structure is built almost entirely of brick. Notable architectural features include the bell-tower (added in 1492), which stands 78 metres tall, and the doorway by Dominique de Florence (added circa 1392). The nave is the widest Gothic example in France at 18m. The interior lacks aisles which are replaced by rows of small chapels between brick internal buttresses, making Albi a hall church. Compared with regular Gothic, the buttreses are almost entirely submerged in the mass of the church. The principal entry is on the south side through an elaborate porch entered by a fortified stair, rather than through the west front, as is traditional in France.
The elaborate interior stands in stark contrast to the cathedral's military exterior. The central choir, reserved for members of the religious order, is surrounded by a roodscreen with detailed filigree stone work and a group of polychrome statues. Below the organ, a fresco of the Last Judgement, attributed to unknown Flemish painters, originally covered nearly 200 m² (the central area was later removed). The frescoes on the enormous vaulted ceiling comprise the largest and oldest ensemble of Italian Renaissance painting in France.
The cathedral organ, the work of Christophe Moucherel, dates from the 18th century.
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.