The Peneda-Geres is the only national park in Portugal and is located in the northeast of Minho, extending to Trás-os-Montes, from the land of the Serra da Peneda to the Serra do Geres, with two major rivers, the River Lima and Cávado. Bordering Galicia, covering the districts of Braga (municipality of Terras de Bouro), Viana do Castelo (Melgaço, Arcos de Valdevez and Ponte da Barca) and Vila Real (Montalegre) the park has a total area of 70.290 acres.
The Peneda-Geres is considered by UNESCO as a World Biosphere Reserve.
It is one of the greatest natural attractions of Portugal, the rare and stunning scenic beauty and the ecological and ethnographic value and variety of fauna (roe deer, ponies, wolves, birds) and flora (pine, yew, chestnut, oak and several medicinal plants). It extends from the mountains of Geres, in the south, through the mountains of Peneda to the Spanish border.
It includes remains of the Roman paved way from Braga to Astorga, known as Geira.The park has several of those, but the two most important centres of pilgrimage are Nossa Senhora da Peneda, replica of the sanctuary of Bom Jesus of Braga, and São Bento da Porta Aberta, a place of great popular devotion.