The easy part of this was that the foundation is just a big square. I picked an arbitrary size: ten 6x6 foundation blueprints on each side. The rest I just copied from inspiration images I found online. I pretty much copied an ancient building called the Ziggurat of Ur.

I think the important thing was that I built the thing first, then started figuring out what to put in it. If I did it the other way around, I figured I’d get stuck in analysis paralysis. I did know I generally wanted to build tier 9 parts in it, so I did make sure one floor was tall enough for particle accelerators, but that’s all i planned in advance.