Two km from El Burgo de Osma, in the direction of Valladolid, we find the Celtiberian Roman town of Uxama Argaela.
The landscape from the watchtower observatory:
This important Celtiberian Roman town occupies the wide Castro hill, identified in the landscape by the watchtower, which stands on the other side of the rocky hill. This vigilant tower formed part of a set of watchtowers, which controlled the frontier between the Muslims and Christians along the River Duero. Today, fitted out as a viewpoint it is the basic point from where to see, not only the old town, but also above all the surrounding landscape, with Osma as the direct heiress of the old Uxama.