The Chapel of Christ and of the Reliquaries ( Spanish : Capilla del Santo Cristo y de las Reliquias ) was built in 1615 and designed with ultra @-@ Baroque details which are often difficult to see in the poorly lit interior . It was originally known as the Christ of the Conquistadors . That name came from an image of Christ that was supposedly donated to the cathedral by Emperor Charles V. Over time , so many reliquaries was left on its main altar that its name was eventually changed . Of 17th century ornamentation , the main altarpiece alternates between carvings of rich foliage and small heads on its columns in the main portion and small sculptures of angels on its telamons in the secondary portion . Its niches hold sculptures of saints framing the main body . Its crucifix is from the 17th century . The predella is finished with sculptures of angels , and also contain small 17th paintings of martyred saints by Juan de Herrera . Behind these paintings , hidden compartments contain some of the numerous reliquaries left here . Its main painting was done by Jose de Ibarra and dated 1737 . Surrounding the altar is a series of paintings on canvas , depicting the Passion of Christ by Jose Villegas , painted in the 17th century . On the right @-@ hand wall , an altar dedicated to the Virgin of the Confidence is decorated with numerous churrigueresque figurines tucked away in niches , columns and top pieces .