St. Peters and the Vatican
An illustration of the exterior of both the Basilica of Saint Peter and the Vatican. The Basilica of St. Peter is one of four major basilicas of Rome, the others being the Basilica of St. John Lateran, Santa Maria Maggiore and St. Paul outside the Walls. It is the most prominent building inside the Vatican City. Its dome is a dominant feature of the skyline of Rome. Probably the largest church in Christianity, it covers an area of 2.3 hectares (5.7 acres) and has a capacity of over 60,000 people.