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Boundary Wall to Glynllifon Park

A Grade II Listed Building in Llandwrog, Gwynedd

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Latitude: 53.0683 / 53°4'5"N

Longitude: -4.2843 / 4°17'3"W

OS Eastings: 247046

OS Northings: 354777

OS Grid: SH470547

Mapcode National: GBR 5H.BPRT

Mapcode Global: WH43T.544M

Plus Code: 9C5Q3P98+87

Entry Name: Boundary Wall to Glynllifon Park

Listing Date: 8 February 1996

Last Amended: 30 September 1999

Grade: II

Source: Cadw

Source ID: 5924

Building Class: Domestic

Location: Bordering the historic parkland to Glynllifon, now Glynllifon College.

County: Gwynedd

Community: Llandwrog

Community: Llandwrog

Locality: Glynllifon

Traditional County: Caernarfonshire

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The boundary wall was rebuilt in 1836 contemporary with the erection of the present house for the 3rd Lord Newborough by the architect Edward Haycock of Shrewsbury. The wall was repaired in 1935.

Glynllifon was the seat of the Glynn family until 1700 when it passed to Thomas Wynn of Boduan. Before the present mansion there existed a mid C18 house and within the park are other notable buildings eg Fort Williamsburg.


The wall runs along the east side of the A499 between the by-roads to Groeslon and Penygroes and also follows the winding path of these narrow roads and on the eastern side it runs west of the lines of the A487 and disused railway.

Rubble wall with pointed, slightly projecting, coping bordering the complete parkland; approximately 10km in length and, at its tallest, is 4m high. On west side it runs beside the main A499 road with lodges at either end and included the main 'triumphal arch' entrance set back near the mid-point (listed separately) and a simple entrance with gate piers near south end; the corner entrances are pointed-arched and that to north is stepped and gabled; that to south opens onto one of the drives. The north side winds along the course of the by-road and includes the East Lodge which has a similarly pointed and gabled entrance arch to the northern drive; just west of the junction with the A487 the wall turns sharply away towards the south-east. To south masonry changes suggest that the wall has been doubled in height; it follows the bends of the similar by-road for 1km and then, just beyond a small architraved doorway, it forks north-east, bordering woodland. On east side the wall follows the line of the old turnpike road which was re-routed to east when the railway was built. A lane from the A487 now gives access to Upper Lodge and east drive and, at the northern end, the wall, disused railway line and road are all close together; the Upper Lodge is now ruinous but the pointed archway is retained.

Reasons for Listing

Listed as an important example of a complete C19 boundary wall and for its contribution to the historic character of a major Welsh country house and park.

Group value with the Grand Lodge and other listed items at Glynllifon.

Recommended Books

Other nearby listed buildings

  • II Mausoleum
    Surrounded by trees on a knoll within the parkland approximately 1km south-east of the house and 0.5km south-east of Fort Williamsburg.
  • II Boundary wall to Glynllifon Park (that part forming Community boundary with Llandwrog)
    One stretch situated adjacent to a track on the west side of the A 487 approximately 1km north of Penygroes and another section along the by-road between Penygroes and Llanllyfni and to north-east.
  • II Grugan Ddu
    Situated approximately 0.5km south of the centre of Groeslon at the end of a short track running off the east side of the A 487; low rubblestone wall with curved ends in front of cottage with cobbled
  • II Pigsties at Grugan Ddu
    Situated immediately to the north of the cottage at Grugan Ddu.
  • II Former reservoir on hill to north-east of Fort Williamsburg
    Situated approximately on the flat hilltop approximately 540m to north-east of Fort Williamsburg and to due east of the house.
  • II Uwchlaw'r-rhos
    Situated approximately mid-way along a long farm track running eastwards from the A 499 between Groeslon and Penygroes towards Cilgwyn; the main part of the farmhouse has a low rubblestone wall with c
  • II Cowhouse at Uwchlaw'r-rhos
    Situated on south-west side of farmyard to north-east of the farmhouse at Uwchlaw'r-rhos.
  • II Cart shelter and stables at Uwchlaw'r-rhos
    Situated on north-east side of farmyard to north-east of the farmhouse at Uwchlaw'r-rhos; short screen wall with wide openings at each end on north-west side of yard.

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