Saint Matthias
The presbytery is surrounded by the ambulatory, which contains two altars devoted to Saint Fernando III of Castile and to Saint Matthias. It is also accompanied by a piece of marble with carvings in Arabic, supposedly taken in the assault on Seville. In the southern flank there is a tribune decorated by José Cataluña. The vaults are simple groin vaults, whose slenderness is magnified by the light coming from the clerestory in the wider and higher central nave.