IIBetws-bach The farmhouse lies on a minor road running N-S parallel and to the W of the B4411 and Rhos-lan, and S of Ynys.
IIBeudy-y-gromlech The house stands in a field on the E side of the village, close to Rhoslan Cromlech.
IIBont Fechan Located on a cut off section of the main A497 Cricieth to Pwllheli road, SE of the village of Llanystumdwy, and formerly carrying the road over the Afon Dwyfor.
IIBron-Eifion Hotel The hotel stands in its own grounds, on the E boundary of the community, adjoining Cricieth.
II*Broom Hall Broom Hall lies in its own parkland, E of Pwllheli, and on the N side of the Criccieth to Pwllheli Road.
IICapel Siloh The chapel is set in the rows of cottages which form the N side of the main street in the village.
IICastell The cottage is set back from the road, S of the church and to the E of Ty'n-y-porth.
II*Church of St Cybi The parish church stands in its churchyard at the centre of the village.
II*Church of St Garmon The church is set in an elevated oval churchyard at the centre of the hamlet.
IIChurch of St John the Baptist The parish church stands conspicuously in its graveyard on the N side of the Afon Dwyfor in the centre of Llanystuymdwy.
IICowhouse and Farm Range W of Ty'n-llan Ty'n-llan farm is in Llanarmon village, immediately S of the church. The farm buildings lie to the W of the farmhouse.
IIFarm Buildings at Bron-Eifion Farm Bron-Eifion farm lies immediately N of the large country mansion built by J A Greaves. The cattle accommodation is the most northerly of three groups of farm buildings.
IFfynnon Cybi and associated works The well lies in the narrow valley below the slopes of Garn Bentyrch, and is reached by a footpath from the NE corner of the churchyard, crossing two fields, the second by a causeway.
IIGlasfryn Coach House The coach-house faces the N side of Glasfryn House across the gravelled courtyard.
II*Glasfryn House The house is near the N boundary of the community, and is reached by a long driveway off the road running N of Pencaenewydd towards its junction with the A499.
II*Grave of David Lloyd George The grave is on the N side of the road leading E from Pont Llanystumdwy, and on the wooded high bank of the Afon Dwyfor.
IIGwynfryn Lodge The lodge stands at the S end of the long drive to Plas Gwynfryn, 500m W of Llanystymdwy village.
II*Highgate The house is in a row on the NE side of the main street, E of the bridge.
IIHouse at Penarth-fawr Penarth-fawr stands by the minor road running N from the A493 E of Pwllheli to Llanarmon.
IIMilestone The milestone stands immediately at the W end of the N parapet of the bridge, under a road sign.
IIMilestone The milestone stands opposite the farm road to Tanllyn, on the old turnpike road from Chwilog to Llanaelhaearn via Pencaenewydd.
IIMilestone The milestone is on the N side of the Chwilog village street, standing against the wall of a house known as Tegfan.
II*Moriah Methodist Chapel The building is located at the centre of the village, set back from and below the road; opposite the Lloyd George Memorial Museum. The lawned churchyard has a low rubble boundary wall to the road.
IINo 1, Minafon The pair of cottages stands at the W end of the village on the S side of the main road opposite the school.
IINo 2, Minafon The pair of cottages stands at the W end of the village on the S side of the main road opposite the school.
IIOld Tollgate Cottage The tollgate cottage was erected c1808 to control access to the Portmadoc to Porthdinllaen road, B4354.
IPenarth-fawr The house stands on a minor road running N from the A497, W of Pwllheli towards Llanarmon.
IIPlas Gwynfryn The house stands in its own parkland N of Llanystumdwy, and is reached from a long driveway from the road running N from the W end of the village.
II*Plas-du The farm lies to the S of the village of Pencaenewydd, SW of the former turnpike road to Porthdinllaen.
IIPlas-y-nant The farmhouse is on the S side of the B4354 through Chwilog, at the E end of the village.
IIPont Ffynnon-gadfa The causeway bridge carries the road from Pencaenewydd over the Afon Erch, running to the SW of the village.
IIPont Llanystumdwy The bridge carries the main street of the village over the Afon Dwyfor.
IIPont Rhyd-y-benllig A road bridge across the Afon Dwyfor, some 7.3km N of Cricieth and S of Rhoslan hamlet.
IIPont Rhyd-y-croesau The bridge carries the road running NW from Llanystumdwy across the deep wooded glen of the Afon Dwyfor.
IIPont Ynys Creua The causeway bridge carries the minor road from Llangybi to Bryncir over the Afon Wen and adjoining marshland.
IIPost Office and attached House The building is in a row, adjoining Tafarn Madryn on the W. The attached house adjoins the shop and post office on the W side, part of the row on the S side of the main road through the village.
IIPwllheli Gates and Gate Piers to Amgueddfa Lloyd George The Pwllheli gates form the N entrance to the museum grounds from the road running E from Pont Llanystumdwy, and directly opposite the grave of David Lloyd George.
IITabernacl The Tabernacl, also called Capel Bach, lies back from the S side of the street past a row of two cottages set end-on to the road.
IITafarn Madryn The building stands at the end of a row of buildings at the village centre, against the former railway crossing.
IITai Newyddion A row of four cottages alongside the village street, attached to Highgate on the right, and to the village shop on the left.
IITai Newyddion A row of four cottages alongside the village street, attached to Highgate on the right, and to the village shop on the left.
IITai Newyddion A row of four cottages alongside the village street, attached to Highgate on the right, and to the village shop on the left.
IITai Newyddion A row of four cottages alongside the village street, attached to Highgate on the right, and to the village shop on the left.
IITalarfor The house lies back from the main Criccieth to Pwllheli road, E of Llanystumdwy.
IITalhenbont The house, until recently known as Plas Hen, stands N of Llanystumdwy and is reached by a driveway leading off the road running NE from Chwilog in the direction of Rhoslan.
IIThe Feathers Inn The inn lies at the E end of the village, on the S side of the village street.
IITrefan Trefan lies along a driveway leading N off the road running E from the bridge in Llanystumdwy, and situated on the scarp overlooking the Afon Dwyfor.
IITy Canton The house stands at the end of a row of houses on the N side of the main street of the village.
IITy'n Llan The house stands behind and on the N side of the Church of St John the Baptist at the centre of the village.
IITy'n-llan The house stands on the S side of the road from Llanystumdwy, opposite the churchyard, with the farm buildings on the W.
IITy'n-y-porth The house lies along the street frontage opposite the church of St Cybi, at the centre of the village.
IITy-Hir The large farmhouse stands end on to the road, and facing S, on the road which runs NE of Llanarmon village in the direction of Rhosgyll.
II*Ty-newydd The house is reached from a drive off the road leading W of the village centre, past Lloyd George's grave.
IIYnysgain ganol Ynysgain lies between the new by-pass road for Llanystumdwy and the sea, SE of the village. Ynysgain ganol farm lies on a farm road leading to where the Afon Dwyfor enters the sea.
IIYsgol Llanystumdwy The school lies at the W end of the village, on the N side of the road.
IIYsgubor Degwm Situated approximately 0.5km E of Penarth Fawr and midway between B4354 and A497. A field barn reached along a farm lane.
IIYsgubor-hen The house stands on rising ground mid-way between Llanystumdwy and Chwilog, and 400m N of the toll house on the A497 crossroads.