Túy (tōˈē) [key], town (1990 pop. 16,248), Pontevedra prov., NW Spain, in Galicia, on the Miño River, opposite the Portuguese town of Valença do Minho. The capital of the Visigothic King Witiza (early 8th cent.), Túy played later an important role in the wars between Castile and Portugal. There is an imposing fortresslike Romanesque cathedral (12th cent.; later restored).