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Cof Cymru: National Historic Assets of Wales · Wales

Gate-house, with gate-piers and retaining wall to courtyard, Plas Rhianfa

Cwm Cadnant, Isle of Anglesey, Wales

The record

Designation
Listed building, Grade II
Broad class
Domestic
Date of designation
6 September 2004
Locality
Glyn Garth
Community
Cwm Cadnant
Unitary authority
Isle of Anglesey
Country
Wales
Coordinates
53.23846, -4.14340
Cadw reference
83051

Slide toward Today to fade the historical sheet and see the modern map underneath.

David Rumsey Map Collection, Stanford Libraries

Shown on 5 historical map sheets, the earliest the 1896 "Sheet 7. Ordnance Survey of England and Wales." (David Rumsey Map Collection, Stanford Libraries).

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This record in Cadw's own full report ↗

Cadw's description

Set back from the SE side of the A545 Beaumaris Road out of Menai Bridge towards Beaumaris.

The building of the Plas Rhianfa was begun in 1849, for Sir John Hay Williams, 2nd Baronet of Bodelwyddan. The house was intended as a dower house, to provide a home for his wife and daughters after his death. Sir John and Lady Sarah Williams did much of the design work themselves, but used as their architect, Charles Reed of Liverpool, and John Rogers of Beaumaris as builder. Designed in a similar idiom, and built using similar materials, the gate-house seems clearly to be an integral part of the original scheme.

Gatehouse. French Gothic style. Faced in Penmon limestone rubble with freestone dressings, and fish-scale slate roof. Two storeyed from courtyard level, but descending to the garden level below. Square in plan, echoing the main house in its detail, including the miniature turrets which clasp each angle at first floor level. West facing elevation has archway through to stable-yard to right, with triangular oriel window cutting through eaves above. Porch advanced to left as square turret. Narrow window onto N (roadside) elevation, and paired narrow lights to S. Dormers within the roof to N and S, each with traceried lights, nail-head decoration and cresting. A later C20 flat roofed extension disturbs the original design to the E.
A pair of gate-piers adjoins the gate-house to the N: square piers with tall pyramidal copings.
The gate-house is linked to the main house by a castellated wall (through which a staircase descends). This serves as a retaining wall for the courtyard.

Not inspected.

Listed as an integral part of the ensemble of building at Plas Rhianfa, and itself a small-scale essay in the French Gothic style.

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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