Celtic Fair of O Son Activity · Porto do Son, Noia, A Coruña Image of Porto do Son, not of the place itself. At the end of July the concello sets up a fair with a Celtic setting, with crafts, traditional music and re-enactments, taking advantage of the nearness of the castro of Baroña, the most visited site in the comarca. Photo: Xosema (CC BY-SA 4.0) What to see and do in Porto do Son