Though the Pietą (literally "pity") that stands in St. Peter's Basilica in Rome is the most famous of Michelangelo's sculptures, it is only one of as many as four Pietąs that the sculptor created during his lifetime. The St. Peter's Pietą was finished when Michelangelo was only 24 years old. This one, called The Deposition, was finished when the sculptor was 78, although Michelangelo himself did not finish it. He abandoned the sculpture out of disgust over an impurity in the marble that had laid undiscovered through most of the eight years that Michelangelo had worked on the sculpture. The female figure to the left was actually finished by Tiberio Calgagni. The standing figure in the back, depicting Nicodemus (or possibly Joseph of Arimathea), is believed to be a self portrait of Michelangelo. This sculpture is on display in the Museo dell'Opera del Duomo.