So apparently, there's this guy Dr. Despommier at Columbia who teaches the public health graduate program and about ten years ago he and his students made up some fairy tale, futuristic, vertical urban farms. If you read the article above you will see them in the slide show. Not only are they huge, but some of them are made of glass and are supposed to run "naturally" from solar light and wind. He created these because our cities have run out of old fashioned farm land and these towers of food farming will feed everyone locally.
It doesn't take a genius to know that these towers would be insanely expensive to build but they will also be expensive and not practical to run. The glass towers will turn into hot houses and the hydropnic irrigation sounds like you will need a full house of horticulturalists to keep the place in check from fungus, insects and mechanical problems. I would also like to note that there are plenty of empty and bare lots all over NYC that only need some raised beds and some TLC. Does everything have to be such a freaking spectacle of architecture and glam for the public just to simply get it?