Who commissioned st peters basilica?

St. Peter's Basilica was commissioned by Pope Julius II in the early 16th century. He aimed to replace the old St. Peter's Basilica, which was in disrepair, with a grand new structure that would serve as a central place of worship and a symbol of the Catholic Church's power. The construction began in 1506 and involved prominent architects, including Donato Bramante, Michelangelo, and Carlo Maderno, contributing to its design and completion over the following decades. The basilica was consecrated in 1626.