Wow, this is another great picture because it doesn't attempt to be too flashy or anything. It just wonderfully illustrates how a city like this would look like. As it's a submarine city, I assume it's somehow underwater, obviously. I can't tell if it's supposed to be sealed in a glass dome or something. Whatever it is, it looks awesome. I can see a lot of dark shapes.
I don't know if those are supposed to be creatures or something. It's probably just bits of metal hanging around. It really does have a spooky appearance when there's no people in it. I love how everything looks so crooked like there's been some conflict. I wonder what its inhabitants would look like?