The Mangos experience is hard to define—one-part Caribbean casual and two-parts Mediterranean chic. The building is unassuming and unfortunately placed, wedged between a McDonald’s and a gas station, but once inside you might forget that you’re in Allentown at all. Stucco walls, brick floors, dim-lit lamps, romantic table candles, columns with archways, wood paneling, and deep reds, blues, and yellows evoke Barcelona. (Don’t neglect the intimate courtyard in warm weather.) Mangos is best-known, as it should be, for its tapas (appetizers that, combined, can serve as a meal) and rum bar. Try the Mojito, the restaurant’s most popular cocktail—it’s exceptional. The food is inventive (though occasionally a bit too salty); the paella is particularly good. The waitstaff is friendly, if a bit inefficient.  Good thing it’s worth the wait. (Open M-F 11a-10p; Sa 4p-10p.)