Hi @voronoi, this is one of the coolest things I have seen in a long time. Not just on Steem, neither ;) What a fun idea! I am not sure if comment submissions are still allowed, but I do have a building suggestion. Cheers - Carl
BUILDING SUGGESTION:
The temple "Mundo Perdido" ("Lost World") from the Mayan site of Tikal - image source: http://www.maya-3d.com/tikal/