A Norman Foster-designed ‘wine cathedral’, Hobbit-style cellars and a Petra-lookalike church are drawing attention to this tasty corner of the Ribera del Duero in northern Spain A Norman Foster-designed ‘wine cathedral’, Hobbit-style cellars and a Petra-lookalike church are drawing attention to this tasty corner of the Ribera del Duero in northern Spain ‘W e can talk about culture, churches, monasteries, whatever, but the main thing here is eating and drinking.” My guide, Loreto Esteban