The Pieta by Michaelangelo is on the right side of the nave in Saint Peter's Basilica. When I was very young, I saw the Pieta on loan from the Vatican at the 1964 World's Fair in New York. In 1972, a mentally disturbed man attacked the sculpture with a hammer in St. Peter's. Since then, it was repaired and has been kept behind bulletproof glass in Saint Peter's. The glass makes taking photographs difficult.