who is the designer of the piazza in front of st. peter's basilica
St. Peter's Square The open space which lies before the basilica was redesigned by Gian Lorenzo Bernini from 1656 to 1667, under the direction of Pope Alexander VII, as an appropriate forecourt, designed "so that the greatest number of people could see the Pope give his blessing, either from the middle of the façade of the church or from a window in the Vatican Palace" (Norwich 1975 p 175). Bernini had been working on the interior of St. Peter's for decades; now he gave order to the space with his renowned colonnades, using the Tuscan form of Doric, the simplest order in the classical vocabulary, not to compete with the palace-like façade by Carlo Maderno, but he employed it on an unprecedented colossal scale to suit the space and evoke a sense of awe.
Saint Peter Saint Peter (Syriac/Aramaic: ܫܸܡܥܘܿܢ ܟܹ݁ܐܦ݂ܵܐ, Shemayon Keppa; Hebrew: שמעון בר יונה‎ Shim'on bar Yona; Greek: Πέτρος Petros; Coptic: ⲡⲉⲧⲣⲟⲥ, translit. Petros; Latin: Petrus; r. AD 30;[1] died between AD 64 and 68),[2] also known as Simon Peter, Simeon, or Simon (/ˈsaɪmən/,  pronunciation (help·info)), according to the New Testament, was one of the Twelve Apostles of Jesus Christ, leaders of the early Christian Great Church. Pope Gregory I called him repeatedly the "Prince of the Apostles".[3] According to Catholic teaching, Jesus promised Peter in the "Rock of My Church" dialogue in Matthew 16:18 a special position in the Church. He is traditionally counted as the first Bishop of Rome‍—‌or pope‍—‌and also by Eastern Christian tradition as the first Patriarch of Antioch. The ancient Christian churches all venerate Peter as a major saint and as the founder of the Church of Antioch and the Roman Church,[2] but differ in their attitudes regarding the authority of his present-day successors (the primacy of the Bishop of Rome).