Main Chapel
From the central nave of the church, through a large pointed triumphal arch supported by pillars, we can see the apse space of the Collegiate Church, within which is the Main Chapel, where the floor is raised to a greater height than the ground level of the rest of the temple, so that access to this area is via three steps.The polygonal floor plan of this Chapel has nine sides, whose walls are divided horizontally into two bodies by a moulding, with four flared Gothic windows with pointed lancets opening up on the upper one for lighting, each with four fine columns on each side with decoration similar to that offered outside.