Thanks for all of the links Simon and Ludi, some really neat stuff. Some of those NYC farms looked to be a little flat, straight, and tidy for my liking, but any agriculture in the city is good agriculture right. Other places that seem to be embracing urban gardening are Chicago and Detroit, after the end of Americas industrial "golden" age a lot of land was abandoned, recolonized by nature, then turned into gardens.
I duly apologize for the state of our website as we have our hands full with the garden and are not web designers, but here is the website for our urban garden/nursery.
The pics are extremely outdated, only show the very beginning of its life and are mostly broken and can't be expanded
Spiral Gardens: Community Food Security Project
I'll get around to taking some current pics one of these days.