Head for the border and the must-see "shopping fortress" of Valenca do Minho, Portugal. This is a particularly attractive town whose 17th-century ramparts, meant to protect against Spanish invaders, now beckon all tourists to shop its pottery, linens and crafts. The unique character of this place derives from its gothic houses and Romanesque church. Your return to Vigo will include a stop at El Castro Mount for views of Vigo Bay and the city.