Gorfolí Peak Nature · Illas, Avilés, Asturias Image of Illas, not of the place itself. At 619 metres it is the roof of the concejo and an exceptional viewpoint: from the summit one takes in the estuary of Avilés, Cabo Peñas and, on clear days, the distant line of the Picos de Europa. Several waymarked paths climb up to it. Photo: Denis Soria (CC BY-SA 3.0) What to see and do in Illas