FGC Metro (line L7) to "Av. Tibidabo" + Tramvia Blau or Bus 196 + Tibidabo Funicular. The Funicular, one of the cable cars in Barcelona, runs on the weekends in February and every day from March to December, except for 25, 26 and 31 December, from 15 min before open Sky Walk to 15 min after Sky Walk and/or Amusement Park closing time.
Tramvia Blau single ticket (the Barcelona tram): €5,50Bus 196 ticket: the bus fare is completely integrated in the ATM transport ticket system.Funicular ticket (purchasing Park admission): €4,10 / Funicular ticket (without purchasing Park admission): €7,70 / Funicular ticket (Tibiclub members): free
Don't miss Costa Brava, you can go by bus from barcelona, it will take about 2 hours by bus, you can make it over day or you can spend a night or more there.