The Grand mosque is a complex of buildings including buildings from different eras in the city's life. The first mosque on this site was built in the late eighth century. In the tenth century to the mosque were added to the mihrab (prayer niche) and Mansour (an enclosure for the Caliph). In the XVI century, the mosque was consecrated and erected inside the Cathedral of the assumption of the virgin Mary.

The Puerta del Pedron (the Gate of remission of sins) the fourteenth century are the courtyard planted with orange trees and with a fountain for ablutions in the centre. The entire interior of the mosque seems to be filled forest of columns – there are about 900. Most of the columns were taken from the ruins of the Roman or Visigothic buildings from all over Spain. There are columns of garnet, Jasper, marble.

The building is a Baroque Cathedral inside the mosque was designed by the architect hernán Ruiz. In the choir of the Cathedral seat with intricate carvings of the work of Pedro Duque Cornejo.

The bell tower with a height of 93 meters built on the site of the minaret.