Raphael
In the 1500s, painters were often asked to design architecture. Raphael's first work as an architect was the funeral chapel in the church of Santa Maria del Popolo. Pope Leo X also chose Raphael to help design Saint Peter's Basilica alongside Donato Bramante. After Bramante died, Raphael took over the designing of the basilica and changed its groundplan from a Greek Cross to a Latin Cross. Michelangelo went back to Bramante's plan but made it simpler. Then another architect, Maderna, made the building longer, as Raphael had planned.