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Cof Cymru: National Historic Assets of Wales · Wales

Forden Gaer Roman Site

Forden with Leighton and Trelystan, Powys, Wales

A scheduled monument in Forden with Leighton and Trelystan, Powys, recorded as Fort (Roman).

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Forden Gaer Roman Site, Forden with Leighton and Trelystan, Powys, 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
Scheduled monument
Site type
Fort
Period
Roman
Date of designation
25 May 1978
Community
Forden with Leighton and Trelystan
Unitary authority
Powys
Country
Wales
Coordinates (centre of the scheduled area)
52.58362, -3.16672
SAM number
MG012
Cadw record number
499

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)
  • 1899 · 151 Welshpool (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)
  • 1916 · Sheet 60. Shrewsbury. (David Rumsey Map Collection, Stanford Libraries)

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This record in Cadw's own full report ↗

Cadw's description

The following provides a general description of the scheduled monument.

The monument comprises multi-period buried features and earthworks, including a prehistoric settlement and funerary features, a Roman fort and settlement, and a early Medieval hall structure.

The monument is of national importance for its potential to enhance our knowledge of Roman military organisation. The monument forms an important element within the wider context of the Roman occupation of Wales and the structures may contain well preserved archaeological evidence concerning chronology, layout and building techniques.

The scheduled area comprises the remains described and areas around them within which related evidence may be expected to survive.

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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