St. Peter’s Square is a large plaza located directly in front of St. Peter’s Basilica in the Vatican City. The Basilica was designed principally by Donato Bramante, Michelangelo, Carlo Maderno and Gian Lorenzo Bernini. 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”.