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 set up on Wednesdays and Sundays with cheeses, cured meats, breads, vegetables and seeds; it is also one of the few Sunday markets in the Principality. Photo: Zarateman (CC BY-SA 3.0) What to see and do in Grado