Rioja follows the Ebro upstream through La Rioja, Álava and Navarre, with the Sierra de Cantabria standing between the vineyards and the Atlantic. That wall is the whole point: it breaks the weather coming off the Bay of Biscay, leaving the valley behind it warm enough to ripen Tempranillo reliably and cool enough to keep the wine fresh. The region divides into Rioja Alta, Rioja Alavesa and Rioja Oriental, and for most of its modern history the classic bottles have blended fruit from all three.

Tempranillo leads, with Garnacha, Graciano and Mazuelo filling out the blend and Viura behind most of the whites. What sets Rioja apart is less the grape than the cellar. Long ageing in American oak gave the wines their vanilla and dried fruit signature, and the labels sell time rather than place: Crianza, Reserva and Gran Reserva are promises about months in barrel. A steady shift towards single zone and single vineyard bottlings now pulls in the other direction.