The Cathedral of St. Peter (San Pietro) is the largest and most famous Roman Catholic
church in the world. Many great architects and artists made
contributions to this beautiful Renaissance and Baroque building. They include Bramante, Michelangelo, Raphael and others.
Construction occurred over a period of years in the 15th, 16th and
17th centuries. The original
church that was located on this site was erected by Emperor Constantine in 319 AD.