Marismas y Riberas del Tinto Nature · Moguer, Comarca Metropolitana de Huelva, Huelva Image of Moguer, not of the place itself. Nature reserve of 823 hectares in the Tinto estuary; the municipality of Moguer also contributes around 3,590 hectares to the Doñana National Park, declared a UNESCO World Heritage Site in 1994. 1994 Photo: José Luis Filpo (CC BY 2.0) What to see and do in Moguer