This reminded me of Bishop's Castle in Colorado, USA — an incredible project built almost entirely by one man (who sadly died last year) working on it nonstop for 40 years:
weird and intriguing... but make no mistake: also weird
Esp since the guy is dead, and cannot possibly address it.
It is difficult however. I understand the need to warn people.
[1] https://assets.bouldercounty.gov/wp-content/uploads/2017/03/...
Another out there spot is in Lucas, Kansas. That guy was also fiercely anti-government.
To be clear, I like that this castle exists (although I also like that building and planning codes exist, so I guess I’m conflicted…), I’m just very surprised!
It does sound a bit like the Cheval’s Ideal Palace, well worth a visit as well (and also in France like Guédelon, though not in the same area): https://en.m.wikipedia.org/wiki/Ferdinand_Cheval
https://en.wikipedia.org/wiki/Shell_Grotto,_Margate
This video makes the scale more apparent (and impressive)