The Papal Basilica of St. Peter in the Vatican "Basilica Papale di San Pietro in Vaticano" or simply St. Peter's Basilica is an Italian Renaissance church in the Vatican City, the papal enclave within the city of Rome. St. Peter's is the most renowned work of Renaissance architecture and one of the largest churches in the world. While it is neither the mother church of the Catholic Church nor the cathedral of the Diocese of Rome, St. Peter's is regarded as one of the holiest Catholic shrines. It has been described as "holding a unique position in the Christian world" and as "the greatest of all churches of Christendom"
Location: Piazza San Pietro, 00120 Città del Vaticano, Vatican City.