The coolest Adidas technology is displayed with minimalist design at this two-story store, one of only a handful of Performance Centers in the country. Scads of merchandise are divided and organized by sport throughout and touted on interactive screens and text tickers. Women shouldn't miss British designer Stella McCartney's signature line of fashion-inspired sportswear. You won't know whether to hit the gym or the runway (same difference?) in her designs. For old-school style with new-age engineering, scope out the Adidas Originals collection.