The Cathedral of Saint Mary of Tudela was originally a collegiate church. It became a cathedral with the creation of the Diocese of Tudela, which existed 1783-1851 and again 1889-1956. It is now a co-cathedral in the Archdiocese of Pamplona and Tudela.
Christians under Alfonso the Battler conquered Tudela in 1119. The city had been under Muslim control, although three religious communities were living there. In the aftermath of the conquest, Muslims were forced to live in a suburb outside the city walls. The city´s main mosque was handed over to the church. The site was designated for the construction of a church (prior to the mosque there had been a church there dedicated to Santa Maria la Blanca). Construction began on a collegiate church in 1168.
The architectural style initially used was Romanesque. Among the treasures of the church, are the three Romanesque portals with elaborate sculptural decoration. The North door is called the Portal de Santa Maria, while to the South is the Portal del Juicio (Portal of the Last Judgement).
The nave and chapels was rebuilt in Gothic-style. Construction lasted until the 13th-century.
The main chapel has a retablo (reredos) by 15th-century artists consisting of 18 panels of the Life of Jesus and Mary, and others depicting prophets and apostles. The sculpture of the Assumption of the Virgin (1606) is by Juan Bascardo.
The central choir was completed by Esteban de Obray in Gothic style. The organ was made in 1759 by Lucas de Tarazona of Lerín.
References:The Broch of Clickimin is a large and well preserved, though somewhat restored broch near Lerwick. Originally built on an island in Clickimin Loch (now increased in size by silting and drainage), it was approached by a stone causeway. The water-level in the loch was reduced in 1874, leaving the broch high and dry. The broch is situated within a walled enclosure and, unusually for brochs, features a large 'blockhouse' between the opening in the enclosure and the broch itself. Another unusual feature is a stone slab featuring sculptured footprints, located in the causeway which approached the site. Situated across the loch is the Clickimin Leisure Centre.