Vigo Ria is an estuary in Galicia, Spain. It is the southern most ria of the Rías Baixas. It is located south of the province of Pontevedra, and extends in northeast direction over a length of 35 km from its mouth at Cape Silleiro to the deepest point in Arcade, with a maximum width of 7 km, and is narrowest in the Strait of Rande at 700 m. Its western entrance is protected by the Cies Islands, which are part of the National Park of the Atlantic Islands, within the islands of Toralla and San Simon. Its borders the north with Morrazo Peninsula. In the extreme south lies the Bay of Bayona. Its easy access, deep draft and calm waters make the Vigo estuary an ideal retreat for sailing and water sports.