Either England or France. I don't know exactly why, but I find both countries extremely charming and exquisite. They're both simple and complex at the same time. I've never been to France but I've been to England, and as soon as I got there and toured a village close to where I was staying, I decided I would move there when I became an adult and after college if I can move.
I live in the U.S. right now. I love it here, but I still have a soft spot for certain European countries (Italy, Spain, France, England, Ireland, Greece, etc).