It is a Renaissance building designed by Juan de Herrera at the beginning of the 16th century. Its main façade is made up of two stretches of columns: the lower part, the work of Juan de Herrera, and the upper, that of Churriguera, which is characterised by its abundant decorative elements. The inside of the building is split up into three naves with side chapels between the butresses. The 15th century altarpiece is the work of Juan de Juni and depicts figures of saints. The Cathedral Museum is also to be found inside the church.