city block garden

If I had a bazillion dollars I'd buy a city block (I hear it's cheaper in Detroit) and tear out all the fences in the backyards. I was looking at some maps and realized that if there were no back fences, the block I live on would be houses around a tract of common land, which would make a really awesome garden. And then if you wanted to live in one of the houses, you'd have to be up for the adventure of a shared backyard. And we could all take turns caring for the garden. And we could have a greenhouse with a hot tub in it.