Parish church of San Julián de Illas Monument · Illas, Avilés, Asturias Image of Illas, not of the place itself. Latin cross in plan and with a square tower, it holds medieval tombs, among them a 14th-century Gothic one decorated with thirteen sharply pointed arches. It is the main monument of a municipality of barely twenty-five square kilometres. Photo: http://www.facc.info (CC BY-SA 4.0) What to see and do in Illas