We, that at least challenged me to try my hand at a geodesic dome. Found a few nice templates on the web, and this is my CC3 version....

And movable walls or fences. I printed the yellow piece on a transparency sheet and glued it into the opening to create a force field effect.

Stairs, bridges and steps for the building entrances...

Okay, here are a few more...

Building #2, the laboratory.

And the small crates, useful as scatter terrain around the board.