Portugal’s nature is delightful and magnificent. But there is nothing to do in cities. Lisbon is very dirty, there are too many drugs there and no nature. Only the 25th April bridge is worth visiting in Lisbon. Porto is very calm and old, you can visit it for one day, not more. It looks well, but too boring. Faro isn’t worth any minute of your valuable time. These are the 3 biggest cities in the country. Other cities have less population and these cities can worth your minute, no more. Because the ocean is too beautiful to spend time in the cities.