Viewpoint of Sopenas Nature · Negreira, Barcala, A Coruña Image of Negreira, not of the place itself. A wooden platform known as the Balcón do Tambre, looking out over the valley through which the river runs before reaching Ponte Maceira; it offers one of the widest river panoramas in the municipality. Photo: Xosema (CC BY-SA 4.0) What to see and do in Negreira