Click on the left square, it's a menu with all the locations I placed, it has an explanation on each, from how to get from the Airport to the city Centre for just 1.30 euros. My website has an explanation on how to visit most of it with just one T-10 card (10.30 euros). http://www.barcelonafrommyheart.com/cheapest-transport-in-barcelona/ The main route drawn is for one day's tour, with most of it within walkable distance. Day 1: Starting from Parc Güell, Metro L3 Lesseps to Fontana, then walk to the end of Las Ramblas. From there take Metro L3 Drassanes to Plaça d'Espanya station to watch the Magic Fountain at night. I suggest to do Sagrada Familia on day 2 or to the beach, and perhaps go to the Spa I suggest, or whatever you fancy from the places I pointed. Enjoy! For more information, please see www.barcelonafrommyheart.com