History of St Peter's Bacilica By claire.cass 1448 Pope Nicholas V recognised the irrepairable state of the old St Peter's Bacilica 1503 Bramante (who was Michelangelo's greatest enemy) was hired to build a new St Peters Basilica 1506 The start of the build Period: 1508 to 1512 Michelangelo paints the Sistine Chapel 1546 Michelangelo, is named architect of St. Peter's. A year later, he produces his first wooden model of Brunelleschil's dome. 1547 Michelangelo redesigns the Dome 1590 26 years after the death of Michelangelo, the dome was completed. 1626 Consecration of the new basilica of St Peter by Pope Urban Period: 1656 to 1667 Bernini designed St. Peter's Square.