He chiseled a head into the palace wall.A story says that to win a bet, Michelangelo carved the head with his hands behind his back, facing away from the wall.

• 米开朗基罗也协助装饰其外观，他在宫墙上雕刻头像，有一个传说提到，为了跟人打赌，米开朗基罗背对着墙，两手背在后面雕刻头像。