St. Peter’s and the Papal Basilicas of Rome takes you on a journey through the four Papal Basilicas in Rome and their treasures: St. Peter’s (one of the 25 destinations most visited by international tourists from all over the world), St. John in the Lateran, St. Mary Major and St. Paul Outside the Walls. Four majestic buildings – each with a precious papal altar, each a treasure trove of timeless works of art and a destination for millions of travelers and pilgrims over the centuries.