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Cof Cymru: National Historic Assets of Wales · Wales

Groed Onen Windmill

Holywell, Flintshire, Wales

A Grade II listed building in Pen-y-Maes, Holywell, Flintshire, designated on 26 July 1951.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Groed Onen Windmill, Holywell, Flintshire, with a pin at the register's coordinates
Ordnance Survey six-inch map, 2nd edition (1888–1913), covering this location. Courtesy of the National Library of Scotland. The pin is ours, placed from the register's coordinates.

The record

Designation
Listed building, Grade II
Broad class
Industrial
Date of designation
26 July 1951
Locality
Pen-y-Maes
Community
Holywell
Unitary authority
Flintshire
Country
Wales
Coordinates
53.27322, -3.21533
Cadw reference
515

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

5 historical maps cover this location, the earliest the 1795 map "To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most humbly inscribed by his obedient humble servant" (Llyfrgell Genedlaethol Cymru – The National Library of Wales).

Historical maps covering this location

  • 1795 · To Sir Watkin Williams-Wynn Bart ... the map of the six counties of North Wales is most… (Llyfrgell Genedlaethol Cymru – The National Library of Wales)
  • 1830 · V.3:11-15:XV. Britisches Reich. A. Kon: England. b. Frstenthum Wales: Shire: 37-40 (David Rumsey Map Collection, Stanford Libraries)
  • 1883 · Watershed map England, Wales 3. (David Rumsey Map Collection, Stanford Libraries)
  • 1896 · 96 Liverpool (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)

Get directions ↗

This record in Cadw's own full report ↗

Cadw's description

Set back from the bend in the road on the edge of the town centre.

Basingwerk Abbey is believed to have erected a windmill on this site. The present structure is however probably late C18 or ca 1800. The windmill has been restored over the last 10 years.

Conical tower windmill, stone built with plinth; recently whitewashed (Autumn 1990). Replaced weatherboarded boat-shaped cap with timber balcony except on sail side. 4-storeys with camber-arched headed openings and modern small-pane, top-hung windows arranged in regular tiers. 2-modern doors to N, the upper one opens onto a 1st floor balcony carried on raking timber struts springing from plinth; iron cleats.

Listed as a prominent local landmark and as a rare surviving Welsh example of a full height windmill.

Nearby in the register

Other entries of the same register within about three miles of this one, by straight line.

Designated Historic Asset GIS Data, The Welsh Historic Environment Service (Cadw), 2026-09-07, licensed under the Open Government Licence http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/ Cadw, the Welsh Historic Environment Service · Open Government Licence v3.0
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