Wizard's Tower by *NM-art on deviantART>> Kingdom of Elves. Could be isolated from the mountain ranges around the kingdom, also probably more overgrown. The tower looks like the swirl of a unicorn's horn
The castle -- He didn't know whether to fear, or embrace the sunlight. How rare it shown, and yet, how brightly it lit the shadows. When things are in darkness, secrets can be kept. But light had a strange way of unearthing even the darkest truths.