New York has always inspired the imaginary. This has made itself felt in urban utopian projects of every variety. A nice article in last Sunday’s New York Times captures some of the exhuberance. This site has some further info about past projects and abandoned dreams. And for today’s utopian dreamer, the arcologists aren’t exactly thinking small.
Finally, for you hopeless pessimists on the far Left, there is always Mike Davis as your companion in doom.