The protected banks of the Duero Nature · Berlanga de Duero, Berlanga, Soria Image of Berlanga de Duero, not of the place itself. Two Natura 2000 sites add up to 796 hectares in the municipal district, between the Duero groves and the limestone heights of the south, where poplar and willow riverbank alternates with moorland juniper. Photo: Araceli Merino (CC BY-SA 3.0) What to see and do in Berlanga de Duero