Arribes del Duero Natural Park is a protected area in western Spain, covering 106.105 ha in the autonomous community of Castile and León. In this area the river Duero forms the national boundary between Spain and Portugal, and the Portuguese side is also protected under the Douro International Natural Park. The most notable characteristics of this natural space are its biodiversity and range of watercourses, which have eroded deep valleys and vertiginous precipices. This landscape is known as Arribes, which is where the reserve name comes from.

Arribes del Duero
IUCN category V (protected landscape/seascape)
Location	Salamanca and Zamora provinces, Castile and León, Spain
Nearest city	Salamanca or Zamora
Coordinates	41°19′25″N 6°23′00″W / 41.32361°N 6.38333°W / 41.32361; -6.38333
Area	106.105 ha
Established	April 11, 2002
Visitors	39.540 (in 2010)
Governing body	Castile and León
www.patrimonionatural.org/ren.php?espacio_id=6