Portugal's second city stands on the Douro River in the north of the country. The centre of Porto – or Oporto as it used to be called in the English-speaking world – is to the north of the river, just at its mouth. Hiring a car in Oporto will better allow you explore the area, and you'll find that driving around the city is helped by an inner and outer ring-road. There's also an efficient network of motorway links to other parts of Portugal. You may also have the thrill of driving across one of the distinctive high bridges across the Douro. The international airport is nine miles to the northwest of the city.