Over half a million people have already passed through the Holy Door of St Peter's Basilica since Pope Francis opened it on Christmas Eve to kick off the Catholic Church's Jubilee 2025, ANSA reported citing the Vatican.

It said 545,532 pilgrims from all over the world have walked through the door since December 24.

"This is a very significant start (to the Jubilee)," commented Monsignor Rino Fisichella, the Pro-Prefect of the Dicastery for Evangelisation, which is in charge of organising of the Holy Year.

By walking through a holy door over the next 12 months, Catholics will be able to obtain a 'plenary indulgence' for their sins.

Holy doors have also been opened at Rome's three other major basilicas, Saint John Lateran, Saint Mary Major and Saint Paul's Outside the Walls, and at the city's Rebibbia prison.

The Jubilee, which features a rich programme of shows, conferences, concerts and religious events, is expected to bring over 30 million pilgrims to Rome.