It was built during the 13th and 14th centuries and it is a true jewel of Gothic architecture. We have mention here the gates of 'Los Apóstoles' and 'Las Vírgenes ',the choir (15th c.), which is isolated and in elevation (one of the few exemples in the world), the main altar of Barroque styl, the stained glass windows (14th c.) an the majestic organ by Torrull (18th c.). This building also has an important archiprestal museum and an archive in which you can find interesting paintings, sculptures, gold and silver articles, vestments and silk