1. Mona Lisa by Leonardo Da Vinci
Arguably the most famous piece of art in the world, the Mona Lisa has captured people’s attention with her piercing brown eyes and enigmatic half-smile that suggests a mischievous side to the model sitting for the portrait. Many would argue that a price could not be put on such a masterpiece but in 1962 the Louvre, the French museum where it currently hangs, insured it for $100m USD. By today’s prices that equates to around $700m USD this making it, by far, the most expensive painting in the world.