Intermunicipal public entity of associative nature composed of the municipalities of Alter do Chão, Arronches, Avis, Campo Maior, Castelo de Vide, Crato, Elvas, Fronteira, Gavião, Marvão, Monforte, Nisa, Ponte de Sor, Portalegre and Sousel. Its mission is to promote and defend the common interests of the associated municipalities, boosting its integrated and sustainable development, enhancing partnerships, creating synergies and maximizing complementarities.

Village located in Alto Alentejo, on a plateau of the mountain of S. Mamede and virtually surrounded by the two arms of the mountain in Portalegre district, occupying an area of 154.6 km2. The county lies limited to the south by Portalegre municipality, west of Castelo de Vide and the east and north borders with Spain. It has a markedly Mediterranean climate, characterized by a very marked dry season in summer, and rainfall is irregular. The strands exposed to SW have warmer weather and drier than those exposed to NE, with a cooler and humid climate.

Portuguese town in the district of Portalegre, Alentejo region and subregion of the Alentejo with about 2300 inhabitants. It is the seat of a municipality with 264.91 km² and 3407 inhabitants. The municipality limits the north by Spain to the east by the municipality of Marvão, the south by the municipality of Portalegre, Crato southwest by the municipality and the west and northwest by the city of Nisa. The romantic nature of Castelo de Vide village, associated with its gardens, plenty of vegetation, mild climate and proximity to the São Mamede mountains, became known as "Sintra of the Alentejo", name given to King Pedro V.