Within the protected areas is the only national park of Aragon: the Ordesa y Monte Perdido National Park, the second national park created in Spain, in 1918, it is found in the Pyrenees in the comarca of Sobrarbe, occupies an area of , a part of the of the peripheral area of protection. It also enjoys other figures of protection like the Biosphere Reserve of Ordesa-Viñamala and is cataloged as a World Heritage Site by UNESCO.