Oh, San Fransisco, definitely. To be honest, there's not much of America outside California that interests me, save maybe Tornado chasing in Iowa, or going to New York (although I'm so completely burned out of New York being in every second goddamned videogame lately).
San Francisco just seems so different to the rest of the US: more relaxed, peaceful, and bonkers design- seriously I'd love to just experience those hills and gaze over them letting the crazy car chases of my imagination run wild. Plus, it still has trams. Mad props for that.