The Cathedral of Ávila has Romanesque and Gothic architectural traditions. It was planned as a cathedral-fortress, its apse being one of the turrets of the city walls. It is surrounded by a number of houses or palaces.
It is not known exactly when the construction of the Cathedral began, there being two theories. One states that Alvar García started its construction in 1091 inside the remains of the Church of the Saviour, which was in ruins as a result of successive Muslim attacks, and that Alfonso VI of Castile raised the money necessary to build it. Other historians believe the Cathedral to be the work of the maestro Fruchel in the 12th century coinciding with the repopulation of Castille led by Raymond of Burgundy.
Of the 13th century are the first stages of the towers and aisles and of the 14th century the second stage of the towers, the cloister, the vaults and the flying buttresses. Already in the 15th century the cathedral was complete and in 1475 Juan Guas built the mechanical clock.
The Cathedral of Ávila is considered by its age (12th century), along with the Cathedral of Cuenca, as the first two Gothic cathedrals in Spain. It shows French influences and great resemblances to the Abbey Church of St Denis, the first European Gothic church.
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.