construction of the Alvão Dam/Reservoir, which allowed irrigation of these lands since the mid-20th century. In addition, the economy supports small service industries, government-based dominated tertiary employment, the granite extraction industry (concentrated in the mines of Jales) and the mineral waters in Pedras Salgadas, a small spa town located about ten kilometers north on the main highway to Chaves. Architecture Prehistoric Dolmen of Serra do Alvão (), a funerary complex of dolmens and menhirs in the civil parish of Soutelo de Aguiar; Military Castle of Pena de Aguiar (), Romanesque castle composed of rock, with three distinct spaces, barbican tower and acropolis, surrounded by a line of walls forming a circular enclosure with low plan, in the civil parish of Telões; Notable citizens Manuel Gregório de Sousa Pereira de Sampaio (1766-1844) a Portuguese military leader and noble; Miguelist general. Martiniano José Ferreira Botelho (ca.1853 – ca.1939), a doctor, druggist, politician and humanitarian, known for his local service to the community and his treatise on the medicinal use of the waters of the area. His home is a point of reference in the community, known as the Casa do Condado (). Rui Sampaio (born 1987) a Portuguese defensive midfield footballer with about 250 club caps. References Notes Sources Towns in Portugal Municipalities of Vila Real District