You have got to check this one out.

An underground rice and vegetable field has been planted beneath an office building in Tokyo’s Otemachi business district. This urban farm - in what used to be the vault of a major bank - is maintained using computer-controlled artificial light and temperature management. It was brought into being by a personnel company as a means of providing agricultural training to young people who are having trouble finding employment and middle-aged people in search of a second career.

For the pictures and the rest of the story check out Make.