I saw a building named Small/Easy Airport Control Tower that was the basis for this idea. That file is located here:
https://www.thingiverse.com/thing:5710830

What I wanted was a tower I could place an LED light in and light up the top globe, like a power reactor. This is for use on a futuristic model railroad.

Its basically a tower with a hollow globe on top, with a hole running through the middle so you can run a 5mm LED up the center and light the globe. This is fully customizable in OpenSCAD.

The globe can either be a sphere, or a geodesic dome, and the number of facets for all sections can be selected independently.

I have printed this twice, using the Experimental Bridge settings on Cura, and the dome prints just fine with no internal supports. I printed it in black then used the Change Filament code in Cura and printed the dome in a translucent color.