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Felin Sarn

A Grade II* Listed Building in Deiniolen, Gwynedd

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Latitude: 53.1462 / 53°8'46"N

Longitude: -4.1368 / 4°8'12"W

OS Eastings: 257187

OS Northings: 363138

OS Grid: SH571631

Mapcode National: GBR 5P.5X5B

Mapcode Global: WH54M.F5BW

Plus Code: 9C5Q4VW7+F7

Entry Name: Felin Sarn

Listing Date: 21 May 2003

Last Amended: 21 May 2003

Grade: II*

Source: Cadw

Source ID: 80871

Building Class: Industrial

Location: On S side of minor road through village, about 1km E of junction with B 4547.

County: Gwynedd

Town: Llanddeiniolen

Community: Llanddeiniolen

Community: Llanddeiniolen

Locality: Clwt-y-Bont

Built-Up Area: Deiniolen

Traditional County: Caernarfonshire

Tagged with: Building

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The building probably dates from the 1880s; and was a mill used for processing raw material into slates for school use. The waterwheel, approximately 30 feet (9.2 metres) in diameter is said to be dated 1885, and is from the De Winton foundry at Caernarfon.


Two storey building in grey brown stone with red brick dressings; slate roof.
Front of building faces road (NW); on upper floor, 11 windows with red brick dressings, 16-pane sash glazing (2nd and 3rd windows blocked). On ground floor, alterations include insertion of 2 broad vehicle entrances; apart from 2 windows at R side, other openings are blocked.


Queen post roof trusses. Upper floor removed in left hand side of building, but remains in right hand side. In enclosed wheel pit near centre of building is 9 metre diameter iron overshot waterwheel from the De Winton foundry in Caernarfon, said to be dated 1885. Control mechanisms remain at upper floor level. Line shafting remains (suspended from roof trusses).

Reasons for Listing

Graded II* for special interest of very large in-situ waterwheel.

External Links

External links are from the relevant listing authority and, where applicable, Wikidata. Wikidata IDs may be related buildings as well as this specific building. If you want to add or update a link, you will need to do so by editing the Wikidata entry.

Recommended Books

Other nearby listed buildings

  • II Pen y Clogwyn
    Situated in remote upland position in rocky landscape with small fields divided by drystone walls.
  • II Pen-y-Clip
    Situated at western end of Fachwen on wooded slope immediately by the side of the Brynrefail to Dinorwic Road on the north side of Llyn Padarn; there is a large rock outcrop immediately behind the cot
  • II Eglwys Crist (Christ Church)
    Situated in large roughly square-shaped churchyard approximately 0.5 km east of Deiniolen and 200m west of Cefn-y-Waen Chapel on north side of road from Deiniolen to Dinorwic; the church is aligned no
  • II Bron Ceris
    Set just below the road running through Fachwen from Brynrefail to Dinorwic above the north side of Llyn Padarn.
  • II Cefn-y-Waen Chapel including Vestry/Schoolroom and forecourt walls
    Approximately 0.7km south-east of Deiniolen, about 200m east of Eglwys Crist; front faces roughly south-west.
  • II Tan y Graig
    Situated on wooded slope off west side of track leading down from the Brynrefail to Dinorwic Road towards the former slate quarry on the north side of Llyn Padarn; low rubblestone wall in front of cot
  • II Pont Penllyn (partly in Llanberis Community)
    Located at the north-western end of Llyn Padarn at the point where it is fed by the Afon Rythallt; the lake and river form the community boundary between Llanberis and Llanddeiniolen.
  • II Pont Penllyn (partly in Llanddeiniolen community)
    Located at the north-western end of Llyn Padarn at the point where it is fed by the Afon Rythallt; the lake and river form the community boundary between Llanberis and Llanddeiniolen.

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