Melin Llynon, or Llynon Mill, is a gristmill located on the outskirts of the village of Llanddeusant on the island of Anglesey. It is the only surviving working windmill in Wales.
The mill was built for £529, 11s in 1775–1776, on land owned by the surgeon Herbert Jones. It is classified as a tower mill. The machinery is within a stone tower and the moving top, or cap cwch, turns so that the sails hwyliau catch the wind from any direction. The tower was 9.3 metres tall and with four floors.
Wikipedia https://en.wikipedia.org/wiki/Melin_Llynon,_Llanddeusant
Address (Unnamed Road), LL65 4, United Kingdom
Coordinates 53°20'16.286" N -4°29'38.001" E