[yarg]

I can't find it now (so it may be an apocryphal story), but an Australian man went to one of these places, didn't find it and decided to set up shop.

It was already on the map, so he figured that it might as well actually exist.

[donalhunt]

Probably a few such stories…

https://www.npr.org/sections/krulwich/2014/03/18/290236647/a...

https://en.m.wikipedia.org/wiki/Phantom_settlement