I do not use any mods and my last build was a very tall stone tower. The support system is pretty good as-is; ironwood beams let me make the tower, no other gimmicks, and you can exploit trees, terrain, giant rocks, and such to take it even higher.

https://steamcommunity.com/sharedfiles/filedetails/?id=2799499755

and you can build off stone as if ground with wood, so could have added another several stories of wood to this but I wanted rock and its already more space than I will ever use.