It was the first thing I thought of when I saw them...
Their architectural design could have been slightly more inspired, although I suppose the grain silo motifs are understandable considering that these scenes supposedly take place in Iowa.
TGT
I have a book on arcologies which I think may be connected to that sight... damn big book, never could get it to fit on a shelf right. But a totally cool read, was one of my favs as a little kid.