Kai Miller-Wells built this impressive tower and landscape for the Lands of Roawia project on merlins-beard.com. The rough stone texture of the tower walls contrasts nicely with the smoother rockwork, and there are some excellent rock-stairs incorporated into the cliffside leading to the tower. Olive green leaves on the tree provide a nice touch of color, and fit the mood of the scene well.
Be sure to check out the story, and other views, on flickr.