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Cof Cymru: National Historic Assets of Wales · Wales

Folly at Tan-y-Bwlch

Maentwrog, Gwynedd, Wales

A Grade II listed building in Tan-y-bwlch, Maentwrog, Gwynedd, designated on 25 February 2005.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Folly at Tan-y-Bwlch, Maentwrog, 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
Domestic
Date of designation
25 February 2005
Locality
Tan-y-bwlch
Community
Maentwrog
Unitary authority
Gwynedd
Country
Wales
Coordinates
52.94667, -3.99386
Cadw reference
83997

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

In an isolated location, set well back from the S side of the A487(T) and on the flood plain of the Afon Dwyryd. Lies to S of the Oakeley Arms.

Several views and maps from the late C18 onwards show a small apparently artificial wooded knoll surmounted by a small building (it is first clearly visible on a sketch by J Ingleby, 1794). Nothing else is known about this building, which was presumably a folly or eye-catcher in the view from Plas-tan-y-bwlch. The building probably had a slate roof originally, but has been roofless since before 1888.

Single storey folly, built to a square plan and now roofless. The structure is built of coursed and mortared rubble masonry with a gable to each elevation. There is a single window in the S elevation and another window or doorway in the north. The structure was fenced off and partially obscured by vegetation at the time of the survey (July 2003).

The interior was not inspected at the time of the survey (June/July 2003).

Listed notwithstanding its condition, as a late eighteenth century folly associated with Plas-tan-y-bwlch.

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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