The little dot underneath the left column is KnightMouse, or just a rough size-guide I put in as a guess to the scale of things.
The black figure of a man underneath the house in the middle is a rough size-guide to the scale of the scene next to a man.

Here's some pre-viz to get a rough idea of concept art in 3D space.
I did the street scene before I'd seen concept art and am too lazy to update as of yet, so, ignore it. I figured I'd post it anyway, because it was there and I dont really see why not.