Tower of telégrafo óptico de Tariego Monument · Tariego de Cerrato, El Cerrato, Palencia Image of Tariego de Cerrato, not of the place itself. Built during the Second Carlist War, it is a prismatic tower of square plan seven metres to a side and three storeys high that formed part of the communications line between the Basque provinces and Madrid. Photo: alfonsobenayas (CC BY 2.0) What to see and do in Tariego de Cerrato