Diving into the Rioja red wine piscina can be at turns fascinating and confusing. My advice is to approach the region without preconceptions. Rioja produces Tempranillo-based reds that range in style from hyper-traditional, often rustic and austere wines that wouldn’t be unfamiliar to a time traveler from the 19th century to flamboyantly rich, fruit-driven, new oak-influenced bottlings that would blend in well—and even stand out for their sheer quality—in blind flights of high-end Napa or Bordeaux wines.