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Cof Cymru: National Historic Assets of Wales · Wales

Private Chapel at Plas-y-nant

Betws Garmon, Gwynedd, Wales

A Grade II listed building in Coed Plas-y-nant, Caernarfon, Betws Garmon, Gwynedd, designated on 29 May 1968.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Private Chapel at Plas-y-nant, Betws Garmon, 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
Religious, Ritual and Funerary
Date of designation
29 May 1968
Locality
Coed Plas-y-nant
Town
Caernarfon
Community
Betws Garmon
Unitary authority
Gwynedd
Country
Wales
Coordinates
53.08369, -4.16552
Cadw reference
3757

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)

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This record in Cadw's own full report ↗

Cadw's description

Set within the grounds of Plas-y-nant above the A 4085 with dense mainly coniferous planting nearby.

Late C17 or early C18 barn and cowhouse converted into a private chapel by the gentrifying owners of Plas-y-nant in the late C19.

Barn, converted into private chapel. Roughly coursed rubblestone with ashlar door and window dressings; slate roof with small round-arched bellcote to south-west gable end. Rectangular plan built into the side of a slope, apparently allowing space for a cowhouse beneath the original barn. Long (north-west) wall has 2 square-headed leaded windows with 4-centred arches and hollow spandrels; small gabled ventilator below ridge. Entrance in north-east gable end through plank door with fleur-de-lys strap hinges; window above. Round-arched window opening to south-west gable end has C20 window.

Original barn roof of 4 bays with 3 pegged A-frame trusses and triple purlins, sawn off at tie beam level, of which only the stubs survive. The roof is now boarded above the rafters; suspended timber floor across the former cowhouse. C19 stained glass in windows to north-west wall.

Included as a substantial late C17 or early C18 barn and cowhouse given added historic interest by its conversion into a private chapel in the late C19.

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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