Fun fantasy, but unless you have the funds and self contained resources, it is only a dream.
Here’s one I sort of follow on YouTube, Ghost Town Living, this guy says he has a partner and the cash to rehab the place and turning into an adventure tourist location...
It’s a abandoned mining town in the mountains outside of LA called Cerro Gordo, the guy has been living there alone for over a year heading up the rehab....
https://www.youtube.com/c/GhostTownLiving/videos?view=0&sort=da&flow=grid