Michelangelo's "Pieta." He was only 22 or 23 when he sculpted this. Substantial damage occurred to the sculpture on May 21, 1972 when a mentally disturbed geologist named Laszlo Toth walked into the chapel and attacked the sculpture with a geologist's hammer while shouting "I am Jesus Christ." Onlookers took many of the pieces of marble that flew off. Later, some pieces were returned, but many were not, including Mary's nose, which had to be reconstructed from a block cut out of her back.