The declaration of the Ordesa Valley National Park Historical milestone · Torla, Sobrarbe, Huesca A royal decree signed by Alfonso XIII created in 1918 the second national park in Spain, weeks after that of Covadonga, to protect the valley carved by the river Arazas; today it is the core of Ordesa and Monte Perdido. 16 de agosto de 1918 Photo: Javier Ripoll (CC BY-SA 4.0) What to see and do in Torla