II*Barracks at Fort Williamsburg At the south-east corner of Fort Williamsburg which is situated approximately 0.5km south-east of the house
IIBodfan Farmhouse Situated in low-lying pastoral landscape approximately 1km south-west of Llandwrog and 700m east of the sea at the end of a driveway running off the minor road from Dinas Dinlle to the A 499; walled g
IIBodhyfryd Situated in low-lying pastoral landscape approximately 0.6km west of Llandwrog on the south side of the road running westwards from the village to the coast at Dinas Dinlle.
IIBuarth Farm Situated at right-angles to track running off north side of minor road running south-westwards from Bwlch-y-llyn towards the Carmel to Y Fron road; low rubblestone wall in front of cottage and similar
IIBwthyn Rhosyn (Rose Cottage) Located in the centre of the village at T-junction immediately north-west of the school; rubblestone wall in front with stone-on-edge coping and iron gate.
IICae'r Llwyn Cottages Located on the southern approach to Llandwrog on the west side of the road; low rubblestone wall to road defines front boundary of front gardens, which are divided from each other by mixture of low wa
IICae'r Llwyn Cottages Located on the southern approach to Llandwrog on the west side of the road; low rubblestone wall to road defines front boundary of front gardens, which are divided from each other by mixture of low wa
IICae'r Llwyn Cottages Located on the southern approach to Llandwrog on the west side of the road; low rubblestone wall to road defines front boundary of front gardens, which are divided from each other by mixture of low wa
IICae'r Llwyn Cottages Located on the southern approach to Llandwrog on the west side of the road; low rubblestone wall to road defines front boundary of front gardens, which are divided from each other by mixture of low wa
IICae'r Llwyn Cottages Located on the southern approach to Llandwrog on the west side of the road; low rubblestone wall to road defines front boundary of front gardens, which are divided from each other by mixture of low wa
IICae-Ffynnon Situated at the end of a short track off the minor road running north-eastwards towards Bwlch-y-llyn from the Carmel to Y Fron road; vast slate waste heap towers behind.
IICae-halen-bach Located at the end of a stone-walled grassy track running westwards through the garden of Cae-halen-mawr off the minor road running north from Llandwrog.
IICaer Eglwys Situated in corner position in centre of village immediately to the south of St Twrog's Church; low rubblestone wall follows road to front.
IICaeronwy-isaf Located across fields in a narrow wooded valley approximately 400m south-west of Hafod Caeronwy; low rubblestone wall and slate path to front (west side).
IICart 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.
IICascade at Glynllifon Facing the main east vista approximately 300m from the house on the south side of the Afon Llifon dingle at the point where it turns north-eastwards.
IICemetery Walls and Gates Situated to south of very narrow road immediately to east of school at eastern end of village.
IIChildren's Mill or Boat House Set into the river bank to south-west of Glynllifon House, beside the weir on the Afon Llifon immediately south of the Stable courtyard.
II*Church of St Twrog Situated in the centre of Llandwrog village in raised roughly circular-shaped churchyard.
IICilgant Situated immediately to north of church in centre of village; full-length rubblestone wall with iron gates to small front gardens follows concave curve of road to front.
IICilgant Situated immediately to north of church in centre of village; full-length rubblestone wall with iron gates to small front gardens follows concave curve of road to front.
IICromlech Set in a rectangular hollow beside the drive through the plantations approximately 270m south of the house.
IIDisused Cottage at Buarth Newydd Adjoins the main house at Buarth Newydd, which is situated at the end of a short track on the north side of the minor road running south-westwards from Bwlch-y-llyn towards the Carmel to Y Fron road.
IIDisused Cottage at Plas Dolydd Situated immediately to the west of the farmhouse at Plas Dolydd, which itself is located on the west side of the A 487 in the hamlet of Dolydd.
IIDisused Farmhouse at Bodfan Stands immediately to the north-east of the main house at Bodfan, to which it is attached by a short section of wall abutting its south-western corner.
IIEast Lodge Abuts the south side of the stretch of boundary wall to Glynllifon Park running along the minor road between the A 499 at North Lodge and Groeslon; pointed archway in wall with decorated spear-headed
IIEngine House and Chimney adjoining Workshops Immediately to the west of the Workshops and at right angles to the western courtyard range. Reached from the north side of the country park visitor centre.
IIFootbridge over Afon Llifon to east of house Situated approximately 120m east of the house at the beginning of the dingle to south of the main eastern vista; links footpaths along both sides of the Afon Llifon.
IIFormer Farm Office at Glynllifon College Farm Situated end on to the farm track at the entrance into the upper of the two inter-linked farmyards. Glynllifon College Farm is approximately 200m uphill from the house and reached via a track beside
IFort Belan Situated 4km south-west of Caernarfon reached along a track to the head of the short peninsula north of Dinas and Morfa Dinlle with dock immediately to east.
IIFountain at end of east vista Prominently situated at the far end of the main east vista approximately 250m from the house.
II*Gatehouse at Fort Williamsburg Built into the bank on the north side of the fort accessed from the main north entrance via a footbridge across the ditch; faces into the former parade ground. Fort Williamsburg is approximately 0.5k
IIGlasfryn & Tamariu Located approximately 1km north of Llandwrog at the end of a short track off the east side of the minor road running northwards from the village.
IGlynllifon Set in its own extensive grounds on east side of the A499 at Llandwrog; the house is reached by a short drive from the grand lodge. Built on a platform site.
IIGrugan 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
IIHafod Caeronwy Located on the south side of a track leading from Y Fron through the disused quarry towards Mynydd Mawr, Hafod Caeronwy is one of the last habitation sites to the west of the high moorland of Mynydd M
IIHay-barn to south of Watermill Situated at the far end of the yard to south of the mill which lies to the south-west of Glynllifon House
IIHermitage Situated approximately 500m east of the house and uphill from the valley of the Afon Llifon
IIIonic Column on former East Drive Situated in the middle of the former east drive on the hill immediately to north of the fountain at the end of the east vista.
II*Lych-gate and churchyard wall at the Church of St Twrog The lych-gate stands on the south-east side of St Twrog's raised and roughly circular-shaped churchyard, which is surrounded and retained by the churchyard wall.
II*Magazine at Fort Williamsburg Situated immediately beside the Tower near the north-west corner of Fort Williamsburg, approximately 0.5km south-east of the house. Reached via a tunnel passage from the Parade Ground.
IIMausoleum Surrounded by trees on a knoll within the parkland approximately 1km south-east of the house and 0.5km south-east of Fort Williamsburg.
IIMilestone Located on south-east side of the A 499 immediately south-west of the small settlement of Bethesda-bach; set in low rubblestone boundary wall.
IIMount Hazel Situated at end of tree-lined driveway running off the minor road through Ty'n-lon; the house sits below the pasture field in front.
IINo.1 (Sea View) Situated on the northern approach to Llandwrog on the east side of the road at the northern edge of the Victorian built development; low rubblestone wall in front.
IINo.1 Cae'r Llwyn Cottages Located on the southern approach to Llandwrog on the west side of the road; low rubblestone wall to road defines front boundary of front gardens, which are divided from each other by mixture of low wa
IINo.1 Tai'r Eglwys (Church Cottages) Situated immediately to north-west of St Twrog's Church in centre of village with Nos.1-5 Cilgant adjoining; low rubblestone wall with decorated iron gates defines front gardens.
IINo.1 Tai'r Ysgol (School Cottages) Located in the centre of the village to the south of St Twrog's Church with Bwthyn Rhosyn (Rose Cottage) directly opposite; rubblestone wall in front defines front gardens.
IINo.2 (Tir Iarll) Situated on the northern approach to Llandwrog on the east side of the road at the northern edge of the Victorian built development; low rubblestone wall in front.
IINo.2 Tai'r Eglwys (Church Cottages) Situated immediately to north-west of St Twrog's Church in centre of village with Nos.1-5 Cilgant adjoining; low rubblestone wall with decorated iron gates defines front gardens.
IINo.2 Tai'r Ysgol (School Cottages) Located in the centre of the village to the south of St Twrog's Church with Bwthyn Rhosyn (Rose Cottage) directly opposite; rubblestone wall in front defines front gardens.
IINo.3 Situated on the northern approach to Llandwrog on the east side of the road at the northern edge of the Victorian built development; low rubblestone wall in front.
IINo.3 Cilgant (The Crescent) Situated immediately to north of church in centre of village; full-length rubblestone wall with iron gates to small front gardens follows concave curve of road to front.
IINo.3 Tai'r Ysgol (School Cottages) Located in the centre of the village to the south of St Twrog's Church with Bwthyn Rhosyn (Rose Cottage) directly opposite; rubblestone wall in front defines front gardens.
IINo.4 Cilgant (The Crescent) Situated immediately to north of church in centre of village; full-length rubblestone wall with iron gates to small front gardens follows concave curve of road to front.
IINo.5 Cilgant (The Crescent) Situated immediately to north of church in centre of village; full-length rubblestone wall with iron gates to small front gardens follows concave curve of road to front.
IINorth Lodge Situated immediately south of the Glynllifon Park boundary wall at point where it meets the A 499 and turns south following the course of the road; round-headed arch of 2 orders in gabled projection h
IINos.3 & 4 Ffrwd Situated on bend of very narrow road approximately 0.5km east of Llandwrog; low rubblestone wall enclosing front gardens has been partly demolished to provide widened access, in the case of No. 4 for
IIOutbuildings at Plas Newydd Located on north-east side of courtyard immediately adjacent to the house at Plas Newydd.
IIPalm House including former Eagle House Situated within the small courtyard to south of the kitchen gardens. Faces west between the screen wall to south, with arched entrance, and the small gardener's cottage to north.
IIPen Bwlch Bach Spectacularly located in isolated upland position on road between Carmel and Y Fron; the cottage is set within its own small field system immediately below the road with a vast slate waste heap direct
IIPenrallt Situated on north side of minor road, the south side of which is marked by the Glynllifon Estate boundary wall, between Groeslon and Llandwrog; dense tree planting surrounds both cottages, which have
IIPigsties at Grugan Ddu Situated immediately to the north of the cottage at Grugan Ddu.
II*Plas Newydd Situated in sheltered parkland position near the Afon Llifon, the house is moated on 3 sides with a stone bridge on the north-west side; surrounding garden with stone walls, that on south-east side a
IIRubble Footbridge between Iron footbridge and Cave Situated approximately midway between the 1840 dated iron footbridge and the Cave towards the northern end of the Llifon valley. Carries the path over the bottom of a small cascade.
IIStone Bridge to west of Watermill Spanning the Afon Llifon immediately adjacent to the watermill. Carries track from main west drive into yard behind mill. Attached to the L-shaped range adjoining the watermill to west.
IISundial to rear of Glynllifon House Situated at the base of the wooded hillside immediately to the rear of the conservatory at the north-east corner of Glynllifon house. Reached from the high level path that runs along the back of the
IITai Elen Glyn Located in pasture fields approximately 0.8km north-east of Llandwrog at the end of a drive running off the minor road between Llandwrog and Llanfaglan.
IITan-y-groeslon Situated on junction of 2 minor roads approximately 0.6km north-east of Llandwrog; the cottage is built into the side of a slope falling away to the rear; in front is a low rubblestone wall with centr
IITanlan Situated approximately 0.5km north of Llandwrog at right-angles to the minor road running north towards Llanfaglan; low rubblestone boundary wall to roadside.
IIThe Nursery Located in well-wooded area of the Glynllifon Estate towards its southern end approximately 0.75km east of Plas Newydd; much of the area within the walls is now heavily overgrown.
II*Tower at Fort Williamsburg Situated approximately 0.5km south-east of the house and reached by the south drive. The tower is the focal building within the Fort and is built on a mound near its north-west corner, between inner
IITryfan Mawr Located on bend of road in the hamlet of Tryfan, of which it is the principal building, approximately 1.5km north-east of Groeslon; lawn to front enclosed by rubblestone wall following curve of road.
II*Tunnel Passage at Fort Williamsburg On the northern side of the Fort linking the former Parade Ground and the Tower and beyond to the outer bastions. Fort Williamsburg is approximately 0.5km south-east of the house.
IITy Newydd Situated in marshy low-lying small-field landscape, set back from minor road running north-east from Carmel towards Rhosgadfan.
IITy Rardd Situated at the north-west corner of the westernmost of the three former kitchen gardens to north-west of Glynllifon.
IITyn Llan (Harp Hotel) Located in the centre of the village directly opposite St Twrog's Church; cobbled surface to front and rubblestone wall with gate at junction with building encloses garden to left.
IIUwchlaw'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
IIVestry Cottage & Former Vestry Situated towards the northern end of the village on the east side of the road leading northwards; the cottage is cut into the adjoining churchyard wall and its projecting south gable is in fact within
IIWood Cottage Located in an extremely isolated position on rising ground at end of no-through trackway running through parkland and then woodland to the south-east of Plas Newydd.
IIWorkshops On the westernmost edge of the complex of estate buildings immediately adjacent to Glynllifon House; south of the central walled garden.
IIYsgol Llandwrog Situated in centre of village with Bwthyn Rhosyn (Rose Cottage) immediately to the west and the cemetery to the east; bounded by the very narrow road on the north, the school overlooks open ground to