The heights of Gabiñeira Nature · Oia, Baixo Miño, Pontevedra Image of Oia, not of the place itself. A summit of 610 metres, the greatest altitude of the concello of Oia, at the western end of the sierra of the Groba; from it one commands the whole coastal shelf and, on clear days, the Cíes islands to the north. Photo: HombreDHojalata (CC BY-SA 3.0 es) What to see and do in Oia