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Cof Cymru: National Historic Assets of Wales · Wales

Castell Gwylan

Llanddaniel Fab, Isle of Anglesey, Wales

The record

Designation
Listed building, Grade II
Broad class
Domestic
Date of designation
23 April 1998
Locality
Porthamel
Community
Llanddaniel Fab
Unitary authority
Isle of Anglesey
Country
Wales
Coordinates
53.18279, -4.22901
Cadw reference
19744

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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

On the banks of the Menai Strait, SE of Porthamel Hall.

Probably built in early C19 as the boathouse for Porthamel Hall, situated in Llanidan community. The hall was remodelled, probably during the C18 and the boathouse was built with a similar Gothick facade.

Early C19 castellated Gothic style house of rubble masonry rendered and colourwashed. Symmetrically planned main elevation overlooking Menai Strait. Two storey 5-window range, 1-3-1 with outer bays advanced and carried up as angle towers. Castellated parapets with band below. Sash windows with pointed arches and with glazing bars interlaced at head. Four-centred arched entrance in flat roofed porch. Modern flat roofed extensions to rear.

Modernised, retains no original features of note.

Listed as an elaborately detailed early C19 boathouse retaining its original Gothic facade (notwithstanding alterations to rear); a prominent feature on the Menai Strait shoreline and forming a group with Porthamel Hall.

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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