The analysis of the historical evolution of the territories and the landscapes has been seldom based upon the cartographic documents, that have always been set in a second place after the texts and writings. Trying to bridge this gap, the first target of the search is to find the ancient maps that are already preserved in the main spanish archives and libraries, to study them and to create a cartographic database that can be used by other searchers; and secondly we will define several patterns that can be applied in a deep knowledge of the historical development of the territories of the Duero basin.