 He also worked on frescos in the Vatican Library.He worked under Cesare Nebbia to help decorate the Capella Sistina of Santa Maria Maggiore, as well as the better known Sistine Chapel in the Vatican complex, where he painted a on thewall facing of the entrance, where previously there had been a painting by Domenico Ghirlandaio which had become damaged.This painting is located on the wall opposite Michelangelo's "Last Judgment".