Dodona lies in the northwest of Greece, south of Ioannina. It is situated in the midst of a lovely, peaceful green valley, overlooked by the twin peaks of Tomaros. Natural openings disrupt the rugged geomorphological relief and allow bilateral movements to and from Epirus’ hinterland areas and the coast. It is acclaimed by the ancient writers as the oldest oracle in ancient Greece, with researchers placing its origins as far back as the Bronze Age. The whole area is scattered with ruins, including an imposing theatre, the sanctuary and an acropolis enclosed by fortified walls, occupying an area of 164.659,43 m2.The aim of this paper is to contextualize the architectural development of the sanctuary of Dodona from prehistory till the first century BCE within a general overview of the sacred landscape. It aims to provide a synthesis of the architectural development of the temenos based on previous and recent excavation data. It argues that the transformation of the sanctuary of Dodona from a small open-air shrine to a pan-Epirote and pan-Hellenic cult centre seems to be associated with the urbanization of Epirus and the formation of an Epirotic identity.