It depends what you're interested in! The typical "US experience" would be somewhere in the Mid-Atlantic or Northeast - you can easily visit New York, Baltimore, Boston, DC, Philadelphia, etc, and even get out to Chicago. However, I'm from the US, and I would recommend studying in the Southwest (somewhere like Phoenix, perhaps). The culture is interesting, landscapes are beautiful, cities are quite modern, and the weather's nice. Definitely a great place for road-tripping and such.