The World Without Us, Suburban Edition
From Mental Floss, and seen by me via Wil Wheaton: the unfinished suburb of Rotonda Sands, Florida, just south of Sarasota (as seen here on Google Maps), with partially built houses being reclaimed by nature and roads to nowhere.
Pretty, in its way. (Shooting at sunset was a nice atmospheric touch.)
(Ooo, and in the comments to Wheaton's entry, someone linked to a LiveJournal community called Abandoned Places.)