While looking for something else entirely (isn't that always how you find cool stuff on the 'net?), I came across
this design for a "vertical" farm.
It's theoretical, not actually built, and I do not know if it will be or not. The interesting thing to me is that I came up with a nearly identical design a few years back when a parcel of land in West Olympia came up for sale. It is located on a main intersection in a fairly high-income liberal section of town, equidistant from Evergreen, downtown, and the mall. I was taking a class at the time on creating local foodsheds, and the idea of urban agriculture had really grabbed me. The limitation, of course, is space, so the obvious solution is to go up. But even stacked layers shade the layers below. When the idea of diagonal "shelves" came to me, it made an instant connection the need for a direct marketing space to sell the produce, and I envisioned a farm stand and cafe, with outdoor tables, local coffee and pastries, and fresh flowers for sale, sheltered under the growing shelves. It's cool for me to see that my untutored idea is not far off from what highly-paid architects think of.