That's a very interesting view! I can see how you've made all the main structures follow a common perspective point.The rocky cliffs all seem very..natural.
I love how you paid attention to the direction of the light, especially how you shaded the left tower while allowing the right one to recieve lighting. The additional bridge in the background indicates a simillar series of islands hidden from the viewer.
But the most complimenting element is the body of water at the base. It really ties the whole picture together, foreground and background. I really like how you colored it too. The combination of shaded areas with lighter strokes over them is very appealing!