St. Peter’s Basilica is one of the holiest temples for Christendom and one of the largest churches in the world. Besides, it is where the Pope presides many liturgies all year round.

The Cathedral of the Most Holy Savior and of Saints John the Baptist and the Evangelist in the Lateran is the cathedral church of the Diocese of Rome in the city of Rome and serves as the seat of the Roman Pontiff. It is the oldest and highest ranking of the four papal major basilicas, holding the unique title of "archbasilica". It is the oldest public church in the city of Rome, and the oldest basilica of the Western world.

The Basilica di Santa Maria Maggiore or church of Santa Maria Maggiore, is a Papal major basilica and the largest Catholic Marian church in Rome, Italy.

The Papal Basilica of Saint Paul Outside the Walls commonly known as Saint Paul's Outside the Walls, is one of Rome's four ancient, papal, major basilicas, along with the basilicas of Saint John in the Lateran, Saint Peter's, and Saint Mary Major. The basilica is within Italian territory and not the territory of the Vatican City State