AccursedTheory said:
Something to do with sex.
Lots and lots of sex.
Yes, but what? Something isn't very specific.
I'd create a full Terre d'Ange, from Jacqueline Carey's novels. For those not familiar, it's a revisionist history retelling of renaissance France where they live by the motto "love as thou will" - straight, gay, bi, multiple partners, etc. Prostitution is not only legal, it's a religious calling and sacred.
Also there is magic, although it mostly sticks to divine types in Terre d'Ange itself.
Seriously, if you want to read a great fantasy novel that takes place in France and is full of sex, adventure, and more sex, you should check out the Kushiel's Legacy series (starting with book 1, Kushiel's Dart). Great stuff.
I could live in Terre d'Ange for five years. Mmm....