Bump. Did some more work on the OP
Stack them, make the walls taller while still maintaining good detail. Having a small lip that acts as a barrier usually works and can be stylish.
I've developed a style i like to call fractal terrain building. Some people used it before me but never really realized the form and stuck with the style throughout-infact, I don't think I'm using fractal style on the main island-I made the island before I developed fractal building.
Thanks for noticing that and i will fix it soon
However-I'm not gunna add the lip. It will seem like I am intentionally blocking them. I might just make everywhere explorable.