Finally, the great extension of the naves and the crossing took place in the first half of the 17th century, fostered by the Archbishop Fray Pedro Gonzalez de Mendoza (son of the first dukes of Pastrana). The collegiate church houses the magnificent parish museum, which is very rich in content. The highlight is the collection of Flemish-Gothic, 15th century tapestries that belonged to Alfonso V of Portugal and are considered by experts as unique masterpieces because of their singularity and exceptional nature.