The oldest door of the temple is that of the North transept, inspired by the corresponding door of Notre Dame cathedral in Paris, given the high influence that the French gothic style has on these entrances. The mullion with Virgin and Child introduces the theme of scenes from the life of Christ, sculpted on its tympanum. It is a type of catechism in stone for believers in the XIII Century. It should be read in order, starting from the lower left end, from the Assumption to the Final Judgement and the Death of the Virgin on the upper part.