With its iron frame, the flax mill is considered as the direct forerunner to the skyscraper and project officer Fay Bailey said it was of "international significance".

BBC: Ditherington Flax Mill in lottery funding bid

The next Challenge, which kicked off last week, is tackling urban agriculture, a radical approach to growing our food inside our cities (think more skyscraper farms than flower box herb gardens, although the project will address both).

FORBES: Imagining Skyscraper Farms