Donatello's work was inspired by ancient sculpture. He was the first sculptor of his time to celebrate the human body, an idea that had died out after Greek and Roman times. His life-size statue of David is his best-known work. The David is the first known free-standing nude statue made since antiquity. Much of his work was done for display in grand churches. Between 1415 and 1426, he made five statues for the Florence Cathedral, also known as the Duomo.