In this 1972 BBC Films production, architectural historian Reyner Banham takes the viewer on a tour of what he describes as the "four ecologies� of the city of Los Angeles: Surfurbia, Foothills, The Plains of Id, and Autopia (beach, basin, foothills, freeways). Noted for his seminal book of essays, Los Angeles: The Architecture of Four Ecologies, published the year before, Banham had a love affair with the City of Angels and its bold typologies. (Open Source Cities)