Take Leonardo da Vinci’s Mona Lisa, whose famous smile has been debated across the world, or Jan van Eyck’s Portrait of a Man, whose tightly pursed mouth is far from beaming. There are several ...

Its enigmatic smile and captivating gaze have made it one of history's most famous works of art. But the question that comes to mind is: Who is Mona Lisa, and who painted her? The Mona Lisa is a ...