In the days of old, Wyverns controlled a vast empire of humans and ruled over them.
Many enchanted towers such as this one were erected by humans for the housing of the creature's eggs and treasures. Now centuries later, the wyvern's are hardly seen anymore, but there are some of this species who became bound to their clutches and even in death still stand ready to defend it. Many adventurers would set out to dispel the ghosts from the towers, not only to restore a bound soul to it's natural course, but also for the large treasures that these creatures would accumulate.
Maybe not a perfect fit for the catagory but I thought I'd give it a go. Also not trying to copycat - I decided to do this before I seen the medieval entry to this category by Shannon Ocean right here- which is pretty sweet by the way.