Although they are all located within the diocese of Rome, St. Peter’s Basilica is the only one actually located in Vatican City, within the jurisdiction of the Holy See, while the other three are in Italian territory. The art and architecture within them is enough to inspire pilgrims and tourists from every corner of the world – whether they are religious or not.

• Archbasilica of St. John Lateran
• St. Peter's Basilica
• St. Paul Outside the Walls
• Papal Basilica of St. Mary Major