Leonardo Da Vinci never signed or dated his most famous painting, the Mona Lisa.

The world's largest book, "Bhutan: A Visual Odyssey" is in a Chicago public library. The book measures 5 feet tall by 7 feet wide when open. It weighs 133 pounds.

In India, pickled ginger, minced mutton and a cottage cheese like substance are popular pizza toppings.

AMAZING FACTS