Canonry of Santo Domingo de la Calzada

In 1137, the church of San Salvador became part of the Diocese of Calahorra after a dispute with Burgos, and it is known that there was a canonry in this church, which is thought to have been established in 1125. In 1158, the bishop of Calahorra, Rodrigo de Cascante, began the construction of a new church with the particularity that the new building was to dignify the tomb of Saint Dominic, moving it inside. This new building was already in use in 1180. The last bishop of Calahorra reorganised the collegiate church in 1223. For security reasons, Pope Gregory IX ordered the transfer the Diocese of Calahorra to Santo Domingo de la Calzada in 1228, with the logical opposition of the former, which ended up maintaining the diocese with two sees: that of Calahorra and that of Santo Domingo de la Calzada.

From 1250 onwards, the rights over the town of Santo Domingo passed from the canonry to the Crown, with the corresponding loss of power. It was probably at this time that the canonical church became a cathedral church. The cathedral began to be built in 1158, the present-day chancel is from that time, with some radial chapels added later. Most of the naves of the church were built at the end of the 13th and beginning of the 14th century. Other outbuildings such as the cloister and the chapter house were added later. In the 18th century, further modifications, additions and repairs were made, including the bell tower (1762-1766), separated from the body of the building.