The mythical unicorn has long been a source of enchantment. Solitary, swift and graceful, the unicorn had a single spiraling horn growing from its forehead. Sought by many, the unicorn's horn was said to have medicinal and magical properties. According to legend, the unicorn disregarded Noah's call to board the ark, preferring to frolic in the rains of the Flood. Ever since, some believe unicorns exist only in our imaginations. And then there are the rest of us.