The seven kilometres of underground wine cellars Curiosity · Aranda de Duero, Ribera del Duero, Burgos Image of Aranda de Duero, not of the place itself. Beneath the old town extends a network of cellars excavated between the 12th and 18th centuries that adds up to some seven kilometres of galleries. They served to make and keep the wine at a constant temperature all year round. Photo: Jose Luis Filpo Cabana (CC BY 3.0) What to see and do in Aranda de Duero