With 1.000.000 hectar, Spain is the leader in the world wine surface. The Rioja alone is bigger than Austria and delivers world-class wines from its native varieties. Of course Sangria is the most-known wine from Spain and who hasn´t a flashback remembrance now of a warm long summer night with a cute Señorita on your bicycle, a bottle of cheap Sangria and el amor y la vida... it could have also been Lambrusco, who cares what wine it was anyway. Better to get some "Unico Gran Reserva" now and look back on the moment enjoying years from now. Vamos!
My favourite areas (D.O. = Dénominaciones de Origen)
Castilly Y Léon - Rias Baixas and Bierzo with world-class white wines from Albariño, Sauvignon Blanc and Verdejo. In red wine Mencia owns!
Toro - Tinta de Toro (Tempranillo) - the name says it all, powerful like a bull
Rioja - especially the part in the north, called Rioja Alta, It has the most influence from the Atlantic, that brings on freshness. Maturana Tinta is an interesting native grape, always in the shadow of Tempranillo, Garnacha, Mazuelo and Graciano. The whites can be interesting as well, especially in the style of Vina Tondonia, made of local grapes such as Viura, Malvasia and Garnacha blanca.
Ribera Del Duero - do yourself a favour and get one bottle of Vega Sicilia in your lifetime. Tinto Fino is the name of the Tempranillo clone here. Less american oak, more elegant. But the exception states the rule.