In "The East" the counties of Olhao, Sao Bras de Alportel, Tavira, Castro Marim, Alcoutim and Vila Real de Santo António are described. It is the region east of Faro up to the Rio Guadiana forming the border to Spain.
The Rio Guadiana is the frontier from Portugal to Spain. The Puente Internacional del Guadiana connects both countries with each other.
The northern regions of the eastern Algarve are scarcely inhabited.
The production of salt is an important economic factor in the Algarve.
In the national park Rio Formosa exist many offshore islands without motor traffic.