I did quite a bit of planning for how the research site of Foundation B would end up looking. Lots of floor-to-ceiling structures to help with stability, as well as quite a few building being raised up off the ground to provide extra space for walking around.
Unfortunately, I didn't end up with a great deal of time to show it off. I'm strongly considering doing more of my environmental thumbnailing once I actually start to script stuff, so I don't end up with quite so much unneeded concept art.