The Doni Tondo or Doni Madonna is the only finished panel painting by the mature Michelangelo to survive. Now in the Uffizi in Florence, Italy, and still in its original frame, the Doni Tondo commissioned by Agnolo Doni, probably to commemorate his marriage to Maddalena Strozzi, the daughter of a powerful Tuscan family. The painting is in the form of a tondo, meaning in Italian 'round', a shape which is frequently associated during the Renaissance with domestic ideas. Michelangelo, 1505–1506 — painted at 30. Panel and oil paint. In the Uffizi Gallery. High Renaissance. Wiki link