Quoted By:
San Francisco.
-Culture? Check. (Among other things, home of the Mythbusters)
-Worldly City? Check.
Progressive Politics? Check
-Good Econ? Depends on where you move, but overall, check.
-Tech. Companies? Ooooh man... where to begin? Home of Google, Firefox, Yahoo, several computer companies, HP has a strong presence here, and many small-scale companies dealing with solar electricity.
-Downtown SF has LOTS of good architecure.
-European Feel? not 100%, and only in spots, but I've always felt like Market Street was a lot like London (in a good way).
-Good Public Transit- Buses, ferries, and especially BART. Also, several local commuter trains (although not that efficient, they do connect to some local spots like Sacramento and Santa Cruz). Also, if Prop 1A is passed this November in California, then it will be home to one end of a high-speed transit line that can take you to all of the other important places in the state in under 3 hours.
-Clean? not 100% but if sticking to the US, you could do a hell of a lot worse.
Also, added note: many colleges and universities nearby, such as UC Berkley, UCSF, UC Davis (the University of California system has graduated more Noble prize winners than any other institution in the world), many CSU schools, Stanford, many liberal arts colleges.
-Largest Asian population outside of Asia (added for culture)
-History? Not ancient history, but nearby Sacramento was the western terminus of the Trans-Continental Railroad.