Instead Professor Kemp says Leonardo probably never handed the portrait over to his original ... that it [the Louvre Mona Lisa] underwent an evolution, as all Leonardo's pictures did.

The Louvre, for example, chose to move Mona Lisa in the evening, after the museum had closed. Getty Images The Salle des États is the Louvre's most-visited room Then, the workers do a trial run ...

invites the reader in to explore the picture.” Dating back to 16th-century Italy, the Mona Lisa by Leonardo da Vinci is the most famous painting in the world. It is also one of the most mysterious.

Visitors observe the painting The Mona Lisa by Leonardo Da Vinci on display in a gallery at Louvre (Getty Images) In an interview with Le Figaro, she said: "My position is very clear - I want ...