<P> St. Peter's Square (Italian: Piazza San Pietro (ˈpjattsa sam ˈpjɛːtro), Latin: Forum Sancti Petri) is a large plaza located directly in front of St. Peter's Basilica in the Vatican City, the papal enclave inside Rome, directly west of the neighbourhood or rione of Borgo . Both the square and the basilica are named after Saint Peter, an apostle of Jesus and the first Catholic Pope . </P> <P> At the centre of the square is an ancient Egyptian obelisk, erected at the current site in 1586 . Gian Lorenzo Bernini designed the square almost 100 years later, including the massive Tuscan colonnades, four columns deep, which embrace visitors in "the maternal arms of Mother Church". A granite fountain constructed by Bernini in 1675 matches another fountain designed by Carlo Maderno in 1613 . </P> <P> 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 . </P> <P> There were many constraints from existing structures (illustration, right). The massed accretions of the Vatican Palace crowded the space to the right of the basilica's façade; the structures needed to be masked without obscuring the papal apartments . The obelisk marked a centre, and a granite fountain by Maderno stood to one side: Bernini made the fountain appear to be one of the foci of the ovato tondo embraced by his colonnades and eventually matched it on the other side, in 1675, just five years before his death . The trapezoidal shape of the piazza, which creates a heightened perspective for a visitor leaving the basilica and has been praised as a masterstroke of Baroque theater (illustration, below right), is largely a product of site constraints . </P>

Who is the designer of the piazza in front of st. peter's basilica