Nowadays, natural regions represent a problem; it is better to call them geographic regions; it is because in our means the natural regions have already disappeared. Around the world there is only one region the one which could be called in this way and it is the Antartida, because there are no many people there but especially the landscape is still natural. The varied geographical medium that we have in our country have motived through the time to make different essays and researches in the region, with different criteria and points of view. We are going to mention some classes. It is considered by some people as simple criteria, it comes from different Spanish conquers who in their chronicles inserted geographic descriptions and maybe the best one is the one of Pedro Cieza de Leon in his play “Crónica del Perú” (1533) stablishing for our country three well defined zones: the cost...