•Vallvidrera is a neighbourhood of the Sarrià-Sant Gervasi district of Barcelona, Catalonia. It is situated in one of the sides of the Collserola hills, considered to be the lungs of the city due to the abundant forests it has. This wealthy neighbourhood has excellent views of the whole city, from some specific places and in a clear day it is possible to see Mallorca and the Pyrenees on the horizon.