Named as Gate of Forgiveness which is usually close, is open only in Holy Years, that is when the 25th July is Sunday.
The opening ceremony takes place on December the 31th of the precedent year.
The traditions says that the gate is knocked three times with a silver hammer.
Pilgrims queue up here right through the year to reach the grave of the Apostle.
The gate was done by Master Mateo and decorated with the 24 Elders of the Old testament.