Old London Air Raid Shelter Becomes Vegetable Farm : The Salt : NPR

In a former bomb shelter beneath London, Zero Carbon Food grows leafy greens and microgreens. Believe it or not, this dark, dank underground farm is an energy-efficient way to grow fresh produce.

http://www.npr.org/blogs/thesalt/2014/02/18/278952319/old-london-air-raid-shelter-becomes-vegetable-farm