Los Angeles
Huh... I started to think about this, and really, other than a church or maybe my front yard, I can't think of a place I haven't had sex or at least a BJ. 
Call me Adventurous!
Because a client of mine works at a prison and they deal with female inmates even if they aren't housed there.
Some of the most beautiful cathedrals in Europe would be so romantic. Looking up at the beautiful stained glass windows and marble columns. What a beautiful visual. I try to engage all my senses at the same time so ideally, I would be in a beautiful looking place, with fragrant air (perhaps rose bushes are surrounding the church and wafting in through open windows), and the acoustics of me sighing in pleasure would echo through the church. And of course being caressed the way I like and all of this would be beautiful. Maybe something to taste too that was delicious like a chocolate sea salt carmel. Yum
Where wouldn't I do it tho? In my mother's house for sure. And maybe near a rattlesnake hole or cactus patch. Id do it beside a black widow spider tho. That would be kinky
But you can put is anywhere else
It's hard to imagine being able to get wood when fearing the lid may slam shut at any moment!