The Marismas (wetlands) of the Coto Doñana National Park, Spain

The Doñana National Park is a natural reserve in Andalusia, southern Spain. It covers 543 km2, of which 135 km2 are a protected area. The Parque Nacional de Doñana is one of Europe's most important wetland reserves and a major site for migrating birds. The parque itself and surrounding parque natural or Entorno de Doñana (a protected buffer zone) amount to over 1,300 km2 in the provinces of Huelva, Sevilla and Cádiz. The park is an area of marsh, shallow streams, and sand dunes in Las Marismas, the Guadalquivir River Delta region where it flows into the Atlantic Ocean.