Separation from Sant Fost de Campsentelles Historical milestone · la Llagosta, Vallès Oriental, Barcelona Image of la Llagosta, not of the place itself. The residents promoted in 1936 the first segregation from Sant Fost de Campsentelles; after a reintegration during the war, the separation was definitive in 1944. Industry sent the population soaring from 681 inhabitants in 1950 to 11,519 in 1975. 1936-1944 Photo: flamenc (CC BY-SA 3.0) What to see and do in la Llagosta