The region began to evolve with the foundation of the monastery in the tenth century, with the most illustrious figure, Mafalda, daughter of King D. Sancho I, becoming a center of economic dynamization, in which the population worked and participated in religious life.

The Geopark of Arouca corresponds to the administrative area of the county, and possesses an important geological heritage of international recognition, with importance for the Giant Trilobites of Canelas, the Partridge Stones of Castanheira and the Icnofósseis of Vale do Paiva.