Arrival at the Galician town of Tui. This pretty border town looks back across the river to the Portuguese border town of Valenca. The International Bridge which is more affectionately known as The Bridge of Friendship connects the two countries. Nearest airports to Tui are Vigo (25km), Santiago de Compostella (124km) and Oporto (119km). You can also take a direct train from Madrid to Guillarei (3.7km).