The Arija glassworks Historical milestone · Arija, Las Merindades, Burgos Image of Arija, not of the place itself. The glass factory installed in 1906 created from nothing the lower quarter of Vilga and gave life to the village until the construction of the Ebro reservoir cut off access to the gravel pits and the industry moved to Avilés. 1906 Photo: Tony Rotondas (CC BY-SA 4.0) What to see and do in Arija