The study of landscape as social construction implies considering its economic and territorial dimensions, as much as its symbolic ones. A major topic in such kinds of studies is the reconstruction of the ways in which natural and social space was perceived by past societies. We ought to approach the project of building an archaeology of perception. One of the aims of such a research programme would be the evaluation of the effects of natural and artificial landscape features on past human observers. This paper will argue that a possible strategy for studying these dimensions of past landscapes could be based on the systematic analysis of the visual features of prehistoric monuments and in the characterization of the scenic effects and vistas related to them. A detailed analysis of the pattern of location of megalithic monuments and of their visibility and intervisibility allows us to recognize certain regularities which display an intention to take account of monuments by provoking dramatic artificial effects. In such a way, we could approach a phenomenology of prehistoric perception without falling into merely subjective solutions. This study is based on a systematic review of the megalithic monuments from Sierra de Barbanza (north-west Iberia). Its main aims are: (1) the proposal for a theoretical and methodological study of these phenomena, combined with; (2) a case-study to reconstruct those monumental strategies used to shape cultural landscapes in Neolithic Europe, and; (3) the explanation of continuities and changes of these traditions.