Here's a terrain piece I've built with Finger and Toe Models' Slagtown: Eden set. It's built at 50% scale so the entire piece is about 3"x4". The miniatures are a mix of OneMonk and Slick's Minis.
Slagtown: Eden is like a construction set with a lot of basic components (girders, floors, walls, ladders) that you can combine to make all sorts of structures. In this case I opened the component sheets in Gimp, resized everything to 50% scale and picked up the pieces I would need.