Frontera Grill is a Mexican restaurant in Chicago, Illinois. It is owned by Rick Bayless. It opened in January 1987 and is located at 445 N. Clark Street in Chicago's River North neighborhood and is not a chain, N. In 2011, the Chicago Sun-Times called it "a study in the art of Mexican cookery". In 1994, Frontera Grill was ranked the world's third-best casual dining restaurant by the International Herald Tribune. In 2007, Frontera Grill won the James Beard Foundation's "Outstanding Restaurant" award, designating it the best restaurant in the U.S.