And so, God sends his angel to prevent Mary's instinctive ... it's a cultural icon. Learn how Leonardo da Vinci created this iconic image and why it's so famous.

Born on April 15, 1452, Leonardo da Vinci is one of humankind's greatest and most creative minds. He may be best known for influential paintings such as the Mona Lisa and The Last Supper ...

I have come to Windsor Castle to see the queen’s collection of Leonardo da Vinci drawings. Outside the towering stone walls, tourists snap selfies and rummage through souvenir tea towels.

Leonardo also was gay, and his intense personal relationships are unabashedly explored in "Leonardo da Vinci ... he has become a painter god.