Melin Hermon Hermon · Isle of Anglesey · Wales

Melin Hermon stands at Hermon, set back from the north side of the A4080 about 700 metres south-east of the church of St Cadwaladr in Llangadwaladr. It is also associated with the name Tyddyn Olifer and was formerly known as Bodorgan Mill.

The mill was built by the Meyrick family of the Bodorgan estate. William Bulkeley's diary records that the foundation of the mill was laid on 8 May 1743, making it one of the earliest surviving Anglesey windmill towers. The Bodorgan estate owned several mills, but Melin Hermon was its only windmill; the estate's other mills were water or tidal mills.

The mill worked as a wind-powered corn mill during the eighteenth and nineteenth centuries. It later passed out of estate control: local history records that it was sold in the 1880s to John Griffith, the owner of a watermill in the area. At John Griffith's death in 1909, milling ceased and his sons converted the tower to use as a corn store. The mill had ceased production before the First World War.

The surviving tower is full height and three storeys high. It is circular in plan, with slightly tapering walls of rubble masonry, formerly rendered, and with gritstone dressings. It has a rectangular doorway with a voussoir head and rectangular openings at the storeys above. Some structural timbers remain inside. Melin Hermon was listed at Grade II in 1968 as a substantially intact windmill tower, one of Anglesey's surviving examples, and as a historically significant mill connected with the Bodorgan estate.