Having opened in 2002, the Porto Underground (Metro) was the largest urban project of the twentieth century in Northern Portugal and revolutionised the landscape of the Invicta city.
Nowadays, the underground network has six lines - one connecting the airport to the city centre - a total length of 67 km and 81 stations - 14 of which are underground. In addition to Porto, it serves the municipalities of Póvoa de Varzim, Vila do Conde, Maia, Matosinhos, Vila Nova de Gaia and Gondomar.
To use the metro, one must purchase the intermodal Andante ticket and load it with individual journeys. But the most practical alternative for those visiting Porto is to use the Andante Tour, which exists in two versions: the Andante Tour 1 costs € 7 and is valid for 24 consecutive hours after its first validation; the Andante Tour 3 is valid for 72 consecutive hours after its first validation and costs € 15.
Upon arrival or departure if you need to leave your luggage in a safe place for a few hours, note that metro station of Trindade has lockers where you can deposit your items for a maximum of 36 hours. The luggage storage is available from 6 am at 1:30 pm and prices vary according to bag volume. The first hour costs € 1, € 1.50 and € 2 for small, medium and large bags, respectively.