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Cof Cymru: National Historic Assets of Wales · Wales

Summer-house & Walled Garden with Ha-ha and Gate Piers at Trevor Hall

Llangollen, Denbighshire, Wales

A Grade II listed building in Trevor Isaf, Llangollen, Denbighshire, designated on 27 July 1993.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Summer-house & Walled Garden with Ha-ha and Gate Piers at Trevor Hall, Llangollen, Denbighshire, 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
Gardens, Parks and Urban Spaces
Date of designation
27 July 1993
Locality
Trevor Isaf
Town
Llangollen
Community
Llangollen
Unitary authority
Denbighshire
Country
Wales
Coordinates
52.97222, -3.10946
Cadw reference
1355

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)
  • 1898 · 121 Wrexham (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1898 · 121 Wrexham (Outline) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)

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This record in Cadw's own full report ↗

Cadw's description

Situated immediately south of main front of Trevor Hall and overlooking Vale of Llangollen.

Mid C18 summer-house and walled garden probably built about the same time as rebuilding of Trevor Hall in 1742-3.

Summer-house occupies W corner of walled enclosure bounded on S side by a ha-ha. Small Georgian-style pavilion with low, three centred ashlared stone arch with impost capitals; open to the east front. Outer ashlar piers with ball finials, linked by moulded cornice over rubble stone spandrel. Patterned tiled, lean-to roof with coped gable to rear.

Attached high rubble stone boundary wall (originally the orchard wall) with flat copings runs west to rear, single arched opening. The wall returns uphill to right to meet red brick north wall which runs back towards house.

From summer-house, there runs to east a masonry ha-ha topped by ironwork railings; the ha-ha joins a garden boundary wall running north which returns inward to meet twin rusticated gate piers with ball finials at driveway entrance.

High backed, curved timber seat within. Plaster ceiling, in poor state of repair at time of inspection (March 1997).

Listed for its intrinsic merit as a mid-C18 garden feature and for its group value with Trevor 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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