 The Chapel of Christ and of the <unk> ( Spanish : Capilla del Santo <unk> y de las <unk> ) 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 <unk> . That name came from an image of Christ that was supposedly donated to the cathedral by Emperor Charles V. Over time , so many reliquaries were 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 <unk> in the secondary portion . Its niches hold sculptures of saints framing the main body . Its <unk> is from the 17th century . The <unk> is finished with sculptures of angels , and also contains 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 <unk> , 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 <unk> away in niches , columns and top pieces . 
