A famous example by Michelangelo was carved from a block of marble and is located in St. Peter's Basilica in the Vatican City. The body of Christ is different from most earlier pietà statues, which were usually smaller and in wood. The Virgin is also unusually youthful, and in repose, rather than the older, sorrowing Mary of most pietàs. She is shown as youthful for two reasons; God is the source of all beauty and she is one of the closest to God, also the exterior is thought as the revelation of the interior (the virgin is morally beautiful). The "Pietà" with the Virgin Mary is also unique among Michelangelo's sculptures, because it was the only one he ever signed, upon hearing that visitors thought it had been sculpted by Cristoforo Solari, a competitor. His signature is carved as "MICHAELABONAROTUS FLORENTIN[US FACIEBA" "Michelangelo Buonarroti the Florentine did it".