The Campoo valley is a hinge of landscapes and climate between exuberant Cantabria and dry Castilla. Julióbriga, the Roman city built during the Cantabrian Wars (29-19 BC), is the greatest Roman exponent in lands inhabited by settlers.
The Argüeso Experimental Archeology Research Center has been developing a Cantabrians town in a corner of Campoo for two decades. The village is a laboratory that reproduces the architecture and life of more than 2,000 years ago through clay constructions with broom and rye roofs.