The Holy Door into Santa Maria Maggiore. They are ceremoniously opened during Jubilee years designated by the Pope, for pilgrims who enter through those doors may piously gain the plenary indulgences attached with the Jubilee year celebrations.
Ceiling is gilded with gold brought from the New World.
The triumphal arch at the head of the nave was at first referred to as the apse arch, but later became known as the triumphal arch. The triumphal arch is illustrated with magnificent mosaics depicting different scenes of Christ and the Virgin Mary. The nave is also covered in mosaics representing Old Testament event most vividly of Moses leading the Jews out of Egypt across the Red Sea.
