(Mona Lisa, 1503 -1506) Leonardo Da Vinci (April 15, 1452 – May 2, 1519) April 15, 1452 - May 2, 1519 Who was Leonard da Vinci? The Da Vinci Conspiracy History Channel Ancient Aliens - April 6, 2012 Da Vinci's Annunciation - Archangel Gabriel tells Virgin Mary she will conceive Jesus Christ. Under x-rays, Gabriel disappears. How cool is that ! I loved the mechanical robo..