1-A:

Via augusta to Round Top, 3rd exit avenue for breaking Borras square to Vallvidrera continue until Vallvidrera, in the square follow the road towards Sant Cugat, Les Planes (between the restaurant and grocery shop), about 3.5 kms find traffic lights and train station Baixador of FGC Vallvidrera, right hand turn to cross the railroad bridge that passes over the rail train and follow the road on your right, you're there.

1-B:

Since the end of via Augusta take the road tunnels Vallvidrera, pay the toll for the right hand locker because you must leave immediately at the exit of Les Planes, follow the road opposite to Barcelona about 3kms and the road will parallel to the railway which is on the left at the end of the line you will find traffic lights and stop train station Vallvidrera, turn left to cross the railroad bridge that passes over the rail train and follow the road on your right, you're there.

From Barcelona Airport ( El Prat )
take a Train, Rodalies (RENFE) or the AEROBUS to Catalunya square and from there change line and catch the FGC. (Ferrocarrils Catalans) Lines : S1 S2 to Baixador de Vallvidrera (our closer stop).
When arriving at the station of Baixador de Vallvidrera to leave by the door that always indicates Barri of the Rectoret and follow the road to the right.
We are only a few minutes walking away from this metro stop, climbing up the mountain. ( 500 steps )

From Sants Estació, Barcelona's Main Train Station,
take the L5 Metro ( Blue line ) to Diagonal and change line to FGC, PROVENÇA and both Ferrocarrils ( S1 / S2 ) Sabadell or Terrassa are running to Baixador de Vallvidrera. When arriving at the station of Baixador de Vallvidrera to leave by the door that always indicates Barri of the Rectoret and follow the road to the right. We are only a few minutes walking away from this metro stop, climbing up the mountain. ( 500 steps )

From Ryanair's Airport flights
Take the Special's Ryanair Bus, direction to Barcelona Estació; del Nord, and after that, take the Metro L1 ( Red Line ) in Arc de Triomf to Catalunya, once there, from Catalunya take a ferrocarril ( S1 / S2 ) Sabadell or Terrassa till 'Baixador de Vallvidrera'. When arriving at the station of Baixador de Vallvidrera to leave by the door that always indicates Barri of the Rectoret and follow the road to the right. We are only a few minutes walking away from this metro stop, climbing up the mountain. ( 500 steps )

From Estació; de França, ( France's Train Station)
take the Metro in Barceloneta L4 ( Yellow line ) till Urquinaona L1 ( Red line ) change line and till Catalunya, when you take a ferrocarril both ( S1 / S2 ) Sabadell or Terrassa are running to Baixador de Vallvidrera. When arriving at the station of Baixador de Vallvidrera to leave by the door that always indicates Barri of the Rectoret and follow the road to the right. We are only a few minutes walking away from this metro stop, climbing up the mountain. ( 500 steps )

Tip: Buy a metro card T-10, you get ten trips for 7 euros and you can use it anytime for Bus, Metro, Ferrocarril, Train, 1 zone, it means Barcelona Area.