I do like old buildings, sometimes abandoned, for this sort of thing. I first would go to an old, dilapidated cottage when I was a kid, and I'd undress and play around. Partly, this was a great place because it was away from others, and I had more privacy than around home. I'd fantasize about all sorts of scenarios, doctor's visits, being strip searched, having sex with girls from school. I also thought about what would happen if the owners of the property found me there like that. Their place was down a path a quarter mile or so, but they might go for a walk and come upon me.
Later, in my teens and adulthood, I've been in larger old buildings, like old mills, factories, or commercial buildings, even an old church. These always turn me on. I've always had a thing for retro porn, and this feels like a setting where lots of scenes I've admired could have taken place.
I've seen lots of nude photo shoots that have been done in abandoned hospitals, and that intrigues me as a location to play with someone, but haven't done that, yet.