Picos de Europa National Park Nature · Cangas de Onís, Oriente, Asturias It was born on 24 July 1918 as the Montaña de Covadonga National Park, the first in Spain, driven by Pedro Pidal, Marquis of Villaviciosa, inspired by his trip to Yellowstone Park; at the time it covered 16,925 hectares. In 1995 it was expanded to the three massifs of the Picos de Europa up to 64,660 hectares, and in 2014 it grew again to its current 67,127, spread across Asturias, León and Cantabria. In 2003 Unesco declared it a biosphere reserve, and with nearly two million visitors a year it is the third most visited national park in Spain, after Teide and the Sierra de Guadarrama. Photo: Javier Montes (CC BY-SA 4.0) What to see and do in Cangas de Onís