Photos That Were Made to Break Our Brain

One of the first optical illusions (or ambiguous images) knowingly created by man is from 2,500 years ago; in some coins from the island of Lesbos, Greece, you can see the profiles of two animals facing each other, apparently herbivores such as calves or goats, which, however, form a third animal – a ferocious animal (maybe a wolf) – when seen from the front.