Ciutat Badia and the municipal separation Historical milestone · Badia del Vallès, Vallès Occidental, Barcelona Image of Badia del Vallès, not of the place itself. Raised from 1970 over former fields and inaugurated in 1975 with some 5,372 dwellings for workers who came from other regions, it functioned as a joint authority of Barberà and Cerdanyola until on 14 April 1994 it was constituted as an independent municipality. 1970-1994 Photo: 1997 (CC BY-SA 3.0) What to see and do in Badia del Vallès