Opened in 1996, the original Barcelona, South Norwalk has grown from a tiny tapas bar seating 30 to a 140-seat restaurant with two sophisticated, beautiful dining rooms and an outdoor patio. The original 40-foot-long, hand-carved walnut bar is still there, as are the young and young-at-heart who populate South Norwalk in the evenings.  SoNo Barcelona showcases the old brick and raw steel of the former factory building it inhabits.  It’s a touch of SoHo in SoNo, with the food and flavors of the Ramblas.