I don't know what happened here, perhaps a resort that never got going - maybe one that was just placed in the wrong place and shut down. It's hard to tell, but I found it quite ominous on my random bike ride today.
I can't say for certain what this ever was because there is no indication as to a business name in any part of the place I explored. I didn't get to see much of it because it was very clearly signposted "Do not enter" in both English and Thai and I only got to the pool before someone was shouting at me.
There is no indication that the place is for sale either - although I can't imagine that anyone would be interested. The land in this area is primarily farms and it is ages from any of the tourist attractions. I can't imagine what the builders were thinking when they chose this area.
I hope the original plan included some sort of elevators
It very well could be a facility that never got finished building, which is something that commonly happens in Thailand... They start, run out of money as their project goes wildly over budget, and then just walk away (rich people function in strange ways eh?)
However, i will likely not get any sort of answer to this because when I asked some local people, they aren't even aware it is there at all. I am going to try to go back one day and get inside the building. I can't imagine what problem they would have with that but it certainly isn't something I am willing to go to jail for.... maybe I should just leave it alone .