Wine of the Val do Salnés subzone Food and drink · Portas, Caldas, Pontevedra Image of Portas, not of the place itself. The trellised vineyards of the concello belong to the oldest subzone of the Rías Baixas denomination of origin, where albariño gives dry white wines, of marked acidity and floral aroma. Photo: Lameiro (CC BY-SA 4.0) What to see and do in Portas