The Magnificent..St. Peter's Basilica was built between 1506 and 1626 under the guidance of several master architects, including Donato Bramante, Michelangelo, Carlo Maderno, and Gian Lorenzo Bernini. Commissioned by Pope Julius II, it was constructed to replace the Old St. Peter’s Basilica, originally built by Emperor Constantine in the 4th century. The basilica stands as a monumental expression of Renaissance and Baroque architecture, housing priceless artworks like Michelangelo’s Pietà and Be