Here is another massive image dump, This one is hexagon themed city planning and architecture:
I will start out with a hexagonal pyramid/temple complex I designed a long time ago and recently modeled in Sketchup. It isn't a photo-quality render, but its modeled with some attention for exterior details, such as individual steps. The overall structure is about 360 feet high, and there are a few human cutouts on there to give it some scale. Look close!
The rest of these are historical record images I have acquired from around the internet as inspiration. I never had any intention of sharing these, so I never bothered to keep track of the sources. As always, I will gladly include attributions or delete images upon request.
Sorry for the lack of commentary, but I don't have anything to add.