Basilica of Saint Peter (Vatican): The Basilica of Saint Peter (Vatican), officially known in Italian as the Basilica di San Pietro in Vaticano and colloquially called Saint Peter's Basilica, ranks second among the five major basilicas of Rome and its Vatican City enclave. Possibly the largest church in Christianity, it covers an area of 23,000 m² (5.7 acres) and has a capacity of over 60,000 people. One of the holiest sites of Christendom, it is the burial site of basilica namesake Saint Peter, who was one of the twelve apostles of Jesus, first Bishop of Antioch, and later first Bishop of Rome...