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Cof Cymru: National Historic Assets of Wales · Wales

Former Engine House

Ffestiniog, Gwynedd, Wales

A Grade II listed building in Maenofferen Slate Quarry, Ffestiniog, Gwynedd, designated on 1 February 1996.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Former Engine House, Ffestiniog, Gwynedd, 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
1 February 1996
Locality
Maenofferen Slate Quarry
Community
Ffestiniog
Unitary authority
Gwynedd
Country
Wales
Coordinates
53.00170, -3.91745
Cadw reference
16891

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)
  • 1883 · Watershed map England, Wales 3. (David Rumsey Map Collection, Stanford Libraries)
  • 1896 · Sheet 7. Ordnance Survey of England and Wales. (David Rumsey Map Collection, Stanford Libraries)
  • 1899 · 119 Snowdon (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

Located immediately behind the electric booster house on the main level, NE of the slab mill.

Description: Small, plain early C20 rectangular slate building with slate roof and tiled ridge. Large boarded double doors to N gable end; two 16-pane fixed windows to W side. Plain interior.

Included for group value with neighbouring listed items at this exceptionally complete example of a slate quarry level.

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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