The painstakingly crafted world that J.R.R. Tolkien created for The Hobbit, The Lord of the Rings, and The Silmarillion is so vivid that it's easy to briefly imagine Middle-earth as a real place--even Tolkien himself had said it existed somewhere on Earth. From the languages spoken and the creatures that peopled it to the wars and cosmology, the richly imagined Middle-earth has left many artists and fans worldwide imagining what it would look and...