The church has a single-nave church, of beautiful and harmonious proportions, comprised of four unequal sections with a simple cross-ribbed vault topped by a pentagonal apse.
Wall paintings decorate the walls of the temple. In the presbytery Gothic paintings from the fourteenth century have been preserved, paintings which are currently hidden by the altarpiece, representing the apostles Peter, James, Paul and John, several prophets and angels.
On the front wall of the Epistle side or lectern side of the church, to our right, next to the Baroque image of St. Joseph, remains of Gothic mural painting can be appreciated. It represented St. Christopher Giant with the Child on his shoulders. He was the protector against sudden death.
Due to the plagues, the walls were whitewashed as a sanitary measure and the paintings were hidden. When the walls were chipped to remove the stone, the paintings were unwittingly removed.
In the front wall of the Gospel there is a singlely dramatic Crucifix, under the invocation of the Good Death, mid-fourteenth century Gothic related to the Hispanic-Flemish fine arts. The people of Olite have a great devotion to the Christ of the Good Death, to whom the patron saint’s festivities are dedicated.
If we walk towards the foot of the church the various chapels which open in the walls of the church can be admired. For an explanation of these chapels press 4.