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Cof Cymru: National Historic Assets of Wales · Wales

Sluice, two sluice houses and linking footbridge adjacent to Children's Mill

Llandwrog, Gwynedd, Wales

The record

Designation
Listed building, Grade II
Broad class
Domestic
Date of designation
8 September 1998
Locality
Glynllifon
Community
Llandwrog
Unitary authority
Gwynedd
Country
Wales
Coordinates
53.07281, -4.30632
Cadw reference
20441

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David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1795 "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).

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This record in Cadw's own full report ↗

Cadw's description

Situated immediately behind the stable courtyard on the Afon Llifon.

Probably part of the 3rd Lord Newborough’s additions in the mid C19, perhaps associated with the adjacent Children’s Mill.

Glynllifon was the seat of the Wynn family and Sir Thomas John Wynn became the 1st Lord Newborough in 1776. The house was rebuilt after a fire 1836-48 by Edward Haycock, architect of Shrewsbury. Influence for some of the garden features came from the family’s grand tours.

Either side of the stone sluice are two square brick built buildings faced in a mixture of dressed stone and glazed terracotta. Stepped flat roof with seated lion on top. Both are now overgrown; that to south is linked to the Children's Mill by a short brick wall. Inside are paddles for regulating the water flow into the leat leading to the Mill. The sluice house to north, by stables, has a cast-iron lamp standard inscribed John Evans 1920.

Linking the two sluice houses is a gated iron footbridge, now in poor condition with some of the deck and decorative parapets missing.

Included for group value with the Children’s Mill and for its context as part of this exceptionally well-preserved C19 estate.

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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