Leonardo da Vinci’s Mona Lisa is overrated. Why? For starters, the director of the Louvre said that 80% of the museum’s visitors are there just to see the Mona Lisa. 80%! We’re talking about one of the finest museums in the world, overflowing with some of the world’s greatest artworks, and people come to only see one thing. Overrated. The story of how that happened involves a passionate art critic and a crime.