Walden 7 and the converted factory Historical milestone · Sant Just Desvern, Baix Llobregat, Barcelona Ricardo Bofill and his Taller de Arquitectura raised between 1970 and 1975 the Walden 7 housing building on the grounds of a former cement works, whose silos they converted into a studio. The complex is an icon of the architecture of the late Franco period. 1975 Photo: Boubloub (CC BY-SA 4.0) What to see and do in Sant Just Desvern