Traditional market of Grado Activity · Grado, Oviedo, Asturias Image of Grado, not of the place itself. Documented since 1256, it is the oldest market in Asturias and is still set up on Wednesdays and Sundays in the town's squares, with vegetables, cheeses, poultry, honey and basketwork brought in from the surrounding valleys. Photo: Zarateman (CC BY-SA 3.0) What to see and do in Grado