Ventano del Diablo (Devil's Window) is located on the side of the road CM 2156 above Garganta del Rio Jucar between the village of Villalba de la Sierra and Una on Castilla-La Mancha province of Spain. The largest of the triple opening has a measured span of 8.5 meters. There are a concrete wall and iron parapet inner the triple arch to protect people about vertiginous view.
