Unicorns, a horse or goat-like animal with a single horn, are a commonly depicted mythical creature. From ancient mythology (in Mesopotamia, India, Greece, and China) all the way into the modern age, people have been fascinated by these majestic creatures. Unicorns were said to contain healing properties. For example, if you drank from a cup made out of a unicorn horn, you would be protected from poisons.