She has one of the most recognizable smiles in the world, but why is the Mona Lisa so famous? She is undoubtedly a masterpiece, but didn’t become a worldwide sensation until 1911 when Vincenzo Peruggia stole her from the Louvre museum in Paris. It has been dubbed by some as the greatest art theft of the 20th century. Find out how he pulled it off and how the Mona Lisa, known as La Joconde in France and La Gioconda in Italy, made her way back to France to become the world’s most visited painting.