Castellar Peak Nature · la Llacuna, Anoia, Barcelona Puig Castellar is a mountain of 943 metres located in the municipality of la Llacuna, in the comarca of Anoia. It is the highest peak of the serra de la Llacuna, though not the highest in the comarca: it is surpassed by the summits of Montserrat, being the eighth highest in Anoia. On its summit there is a geodesic marker, and it appears, under the name Puig Castellar (serra d'Ancosa), on the list of the 100 cims of the Federació d'Entitats Excursionistes de Catalunya, a classic among hikers in the area. Photo: Creator:Martí8888 (CC BY-SA 4.0) What to see and do in la Llacuna