The Underground

The metro is the quickest way to get from A to B in Barcelona. It is fairly cheap compared with London, for around 8 euro you can purchase a T10 ticket which gives you 10 complete journeys each up to 1 hour and 30 mins distance. You can also use this ticket on the buses, trams and short distance RENFE trains.

For a full information guide on transport in the city see:
http://www.tmb.cat/en/home