Thelnetham Windmill Thelnetham · Suffolk · England

Thelnetham Windmill was built in 1819 as a small four-storey tower mill, replacing an earlier post mill on the same site. Its original machinery was mainly wooden, but in 1832 the mill was extensively altered with the introduction of iron machinery. The mill worked until a tailwind damaged the sails in the mid-1920s.

It stood derelict for many years, and in 1976 the cap was blown to pieces in a gale. Five Suffolk Mills Group members bought the derelict mill and an acre of land in 1979. Restoration took eight years and was carried out largely by volunteers.

Milling recommenced in 1985. The tarred tower retains a beehive-shaped cap, an eight-bladed fantail painted red, white, and blue, double-shuttered patent sails, two pairs of French burr stones, a wooden upright shaft, and an engine-driven hurst on the ground floor. In 2013 the mill was gifted to the Suffolk Building Preservation Trust.