Unicorn based stories existed for thousands of years and have appeared in a variety of cultures throughout history. Early explanations of unicorn-like animals can be located in ancient writings, however people did not always see them as the white horse-like creatures that are presented today. During the Middle Ages, unicorns gained popularity through European stores and artwork. Gradually, they became associated with fantasy, imagination, and magic. Today, unicorns are popular in movies, art, books, and other forms of entertainment.