A working brick tower windmill on a low hill in Sneinton, just east of the city centre. It's the family business of George Green (1793–1841), the miller's son who taught himself mathematics by candlelight and produced one of the most influential mathematical essays of the nineteenth century while working the mill. The mill was restored in the 1980s and now grinds organic flour for sale.
A small free science centre next door covers Green's work, with hands-on exhibits on potential theory, electromagnetism, and the way Green's ideas re-emerged unexpectedly in 20th-century physics. The mill itself is open to climb on most weekends — best on a windy day when the sails are turning.