 The choir is where the priest and / or a choral group sings the <unk> . It is located in the central nave between the main door and the high altar , and built in a semicircular fashion , much like Spanish cathedrals . It was built by Juan de <unk> between <unk> and 1697 . Its sides contain 59 reliefs of various saints done in mahogany , <unk> , cedar and a native wood called <unk> . The <unk> that surrounds the choir was made in <unk> by <unk> <unk> in <unk> , China and placed in the cathedral in 1730 . 
