I'm on the road to Canberra in an hour or so and I have run out of time to post.
So Have a read of this. It is an article about Norman Klein's, The History of Forgetting: Los Angeles and the Erasure of Memory, from vol 2.(2000) issue of Modernity: Critiques of Visual Culture.
Klein characterizes the Los Angeles cityscape:
"...as a "topology of forgetfulness." Klein uses the term "erasure" to denote the city's tendency to displace, deny, or unrecognizably alter its past. His argument attempts to illustrate the manner in which social as well as natural forces promote a disappearance of history. The transformation of farmland to housing, natural disasters which constantly redefine the landscape, and individual efforts to re-shape one's self are several examples Klein uses to illustrate the city's status as a space without a past."