For six weeks in 1530, Michelangelo hid in a little cell-like room while the Medicis wanted him dead. While there, he drew on the walls. “The collection of around 50 ‘doodles’, first discovered by Paolo dal Poggetto in 1975, include a self-portrait, a life-size risen Christ and some sketches experts believe are copies of figures the artist had painted earlier on the ceiling of the Sistine chapel.” The drawings are being restored after having badly deteriorated.