Martim Longo is a Portuguese civil parish/freguesia in the municipality/concelho of Alcoutim, on the eastern side of the Algarve, 134.14 km² in area, and with 1,384 inhabitants (2001).
Alcoutim |
Built in the 13th century, the castle stands in a dominant position on a hill south of the parish seat of Alcoutim on the right bank of the San Marcos River (tributary of the Guadiana River), opposite the territory of Sanlúcar de Guadiana (in Spain).