1st wp: N 41º24.606’, E 2º08.844’. Climb the Baixada de la Gloria, with or without effort, up to you. Count the number of escalators, nº A, while you go to next wp.
2nd wp: N 41º24.713’, E 2º09.024’. There is an entrance to Parc Güell, just bellow the 3 Crosses (Les Tres Creus), the place where it was preview to build a church for the 60 parcels in which Eusebi Güell conceived a city-garden, that finally became the Parc Güell.
3rd wp*: N 41º24.821’, E 2º09.171’. Entrance to the "Sala Hipòstila", neuralgic centre of the Parc Güell. In the stairs there is one multicolored dragon, international symbol of the park. Once in the Hypostyle Room, full of columns, you will count BC of them, and D spaces where the column lacks.
* Since October 2013, to access this wp, you must enter in the monumental precint of the park, thus paying an entrance fee of 10 €. If you want to skip it, you can find BC in wikipedia (only Spanish version), and D=(B-C)x2. Be aware that some sources have the wrong number 84.
4th wp: N 41º24.983’, E 2º09.181’. Do not attack this wp straight ahead, but wandering through the main paths of Parc Güell. There is a good view over the city, with Montjuic mountain by the seaside, and the harbour bellow it. There are E stone benches, or E steel and wood benches. It couldn’t be otherwise: to hunt the geocache you will have to climb what we call the Bald Mountain (la Muntanya Pelada).
Check summ: A+B+C+D+E=30 and A+B=C+D+E. To be used if you start at wp3.
5th wp, the geocache: N 41º2E.(C-E)(C-C)A’, E 2º09.(B-A)B(C-D) at 258 m (average of 5 measurements). The cache is in a stone circle, made as for protecting oneself from the wind. The wall of the circle finishes next to a big rock, and just at this junction there is a big hole covered by a couple of medium sized stones. Uncover carefully the hole to retrieve the treasure, in the shape of a plastic box with blue lid. Do not spoil the wall.
Nice views of Parc de la Creueta del Coll and Collserola.
To return to the city centre: a) go back to Vallcarca station, or b) bus stops nº 24 or 25 at N 41º25.102’, E 2º09.438’ or N 41º24.935’, E2º09.302’.