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Cof Cymru: National Historic Assets of Wales · Wales

Pillbox in grounds of Trearddur House

Trearddur, Isle of Anglesey, Wales

A Grade II listed building in Trearddur, Trearddur Bay, Isle of Anglesey, designated on 30 June 1998.

Ordnance Survey six-inch map, 2nd edition (1888–1913) covering the location of Pillbox in grounds of Trearddur House, Isle of Anglesey, 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
Defence
Date of designation
30 June 1998
Locality
Trearddur
Town
Trearddur Bay
Community
Trearddur
Unitary authority
Isle of Anglesey
Country
Wales
Coordinates
53.28218, -4.61953
Cadw reference
20080

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 1799 map "Ireland." (David Rumsey Map Collection, Stanford Libraries).

Historical maps covering this location

  • 1799 · Ireland. (David Rumsey Map Collection, Stanford Libraries)
  • 1883 · Watershed map England, Wales 3. (David Rumsey Map Collection, Stanford Libraries)
  • 1899 · 93 Holyhead (Hills) (David Rumsey Map Collection, Stanford Libraries)
  • 1901 · Sheet 9 and 10. (David Rumsey Map Collection, Stanford Libraries)
  • 1919 · Sheet 41. Anglesey. (David Rumsey Map Collection, Stanford Libraries)

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This record in Cadw's own full report ↗

Cadw's description

Located on a rocky promontory within the grounds of Trearddur House, set back from the W side of Lon St. Ffraid.

Second World War pillbox fortification; part of the defences of the town of Trearddur Bay.

Circular plan. Built of local rubble, with rubble plinth on concrete foundations; head of wall has rubble set on end to give effect of folly or garden architecture, concealing concrete roof. Square-headed doorway and openings around circumference; doorway protected by curving screen wall.

Included as unusual example of this fortification type, to a design believed to have been used only on Anglesey.

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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