IIArgraig In an elevated position, set back from the E side of Bull Street in the village of Maentwrog; to ESE of the Church of St. Twrog. Arcraig is set to the rear of, and between Penlan and Bryn.
IIBarn and Cart Shed at Llennyrch Farm At the end of a track off a minor road approx. 5.5km NE of Talsarnau, near to the N end of Llyn Trawsfynydd.
IIBron Turnor Mawr Within private grounds set back from the NW side of the narrow country road that runs along the N side of the Vale of Ffestiniog between the A487(T) and the B4391; ENE of Maentwrog.
IIBron-y-wern Set back slightly from the W side of Bull Street (A496) in the centre of the village of Maentwrog; to S of Pen-y-Bryn and the lychgate to the Church of St. Twrog.
IIBryn or Penlan flats In an elevated position, set back from the E side of Bull Street in the village of Maentwrog; to ESE of the Church of St. Twrog. Bryn is located to S of Penlan.
IIBryn y Dolwyryd Slightly set back and raised above the N side of the narrow country road that runs along the N side of the Vale of Ffestiniog between the A487(T) and the B4391; ENE of Maentwrog.
IIBryn-yr-odyn Set back from the N side of a country road leading W off the A470(T) at Bont Newydd to the B4391; located c.2.5kms ENE of Gellilydan.
IIBwlch y Maen - Former Co-operative shop Set along the W side of Bull Street (A496) at the N end of the village of Maentwrog; in alignment and directly S of The Grapes Hotel.
IICae'n y Coed Uchaf On S side of A487 approximately half-way between Maentwrog and Gellilydan. Left (N) gable end to road, small walled foregarden to front of house.
IICartref Set alongside the W side of Bull Street (A496) in the village of Maentwrog; located to SE of Church of St. Twrog at the rear of Llys Twrog.
IICartshed at Creigiau Duon Set back from the W side of the A487(T) on the southern approach to the village of Gellilydan. The cartshed range is directly to S of the farmhouse at Creigiau Duon.
IIChurch of St. Twrog Set back from the W side of Bull Street (A496) in the centre of the village of Maentwrog. Entry to the church grounds is via the lychgate between Neuadd Llewelyn and Pen-y-Bryn.
IICoach house range at the Oakeley Arms Set at the N side of the A487(T) at its junction with the B4410, to NE end of the small hamlet of Tan-y-bwlch. The coach house range is directly N of the Oakeley Arms.
IICoed-y-Bleiddiau In an isolated hillside location set within a walled enclosure on the north side of the Ffestiniog Railway line, approximately 950m NNE of Tan-y-Bwlch reached via a footpath through Coed Ty-Coch.
IICreigiau Duon Set back from the W side of the A487(T) on the southern approach to the village of Gellilydan.
IICrochendy Twrog On S side of A487, about 250m SW of junction with B 4410.
IICynfal-fawr Set back from the SW side of a country road leading W off the A470(T) at Bont Newydd to the B4391; located c.2kms ENE of Gellilydan.
IIDduallt (also known as Plas y Dduallt) In an isolated rural location raised high above the N side of the narrow country road that runs along the N side of the Vale of Ffestiniog between the A487(T) and the B4391; ENE of Maentwrog.
IIDerlwyn Set along the S side of Bull Street (A496) at the S end of the village of Maentwrog.
IIDolydd Slightly set back from the E side of the road leading SE off Bull Street in the village of Maentwrog; located c.100m SE of the Church of St. Twrog. Located directly to left (S) of Hendy'r Ysgol
IIFolly at Tan-y-Bwlch In an isolated location, set well back from the S side of the A487(T) and on the flood plain of the Afon Dwyryd. Lies to S of the Oakeley Arms.
IIFormer coach house and stable range at Plas Tan-y-bwlch In an elevated location, set within private grounds above the NW side of the A487(T) on the W approach to the village of Maentwrog. The stables and cartshed range is to E of the main house at Plas Ta
IIFormer dairy at Tafarn Helyg Set back below the SW side of the A487(T) by the junction with the road leading into the village of Gellilydan. The outhouse is located directly to E of the house at Tafarn-helyg.
IIFormer forge at Tafarn-helyg Set back below the SW side of the A487(T) by the junction with the road leading into the village of Gellilydan. The outhouse is located directly to NE of the house at Tafarn-helyg.
IIFormer kiln house at Tan-y-bwlch mill Set alongside the NW side of the A487(T) in the centre of the small hamlet of Tan-y-bwlch. Directly to NE of the former mill and mill house.
IIFormer servant's quarters to rear of Plas Tan-y-bwlch In an elevated location, set within private grounds above the NW side of the A487(T) on the W approach to the village of Maentwrog. The servant's quarters are to rear (NW) of the main house at Plas T
IIGellilydan Terrace Set at an angle to the SW side of the main road that runs NW through the village of Gellilydan.
IIGellilydan Terrace Set at an angle to the SW side of the main road that runs NW through the village of Gellilydan.
IIGlan Dwyryd Set at the W side of Bull Street (A496) in the centre of the village of Maentwrog; directly E of the Church of St. Twrog; between the former Co-operative shop and Neuadd Llewelyn.
IIHaybarn opposite Derlwyn Set below the N side of the A496 leading SE out of the village of Maentwrog towards Harlech; directly opposite Derllwyn.
IIHen Ysgol Set back slightly from the E side of Bull Street (A496), at the junction with Derwen, in the centre of the village of Maentwrog.
IIHoly Cross Church Set back from the E side of the A487(T) to W of the village of Gellilydan.
IIHouse adjacent to Bryn y Dolywyd Slightly set back from the N side of the narrow country road that runs along the N side of the Vale of Ffestiniog between the A487(T) and the B4391; ENE of Maentwrog.
IIIvy Bridge (partly in Talsarnau community) Spanning the Afon Prysor, c. 1.5km to S and W of Maentwrog and 150m SE of Pont Felinrhyd-fawr. Spans the boundary between Maentwrog and Talsarnau.
IILlennyrch Farm At the end of a track off a minor road approx. 5.5km NE of Talsarnau, near to the N end of Llyn Trawsfynydd.
IILlys Twrog Set at right angles to the W side of Bull Street (A496) in the centre of the village of Maentwrog; to SE of the Church of St. Twrog.
IILodge to E of Plas Tan y Bwlch Set well back, within private grounds, above the NW side of the A487(T). The lodge is at the eastern entrance to Plas Tan-y-bwlch and lies to NE of the house.
IILodge to S of Plas Tan-y-bwlch In private grounds set above the N side of the A487 (T), the lodge is set at the E side of the S drive up to the main house at Plas Tan-y-bwlch.
IILychgate to Church of St. Twrog Set along the W side of Bull Street (A496) in the centre of the village of Maentwrog; located between Neuadd Llewelyn and Pen-y-Bryn.
IIMilepost Set along the E side of the A487(T) at the junction with the country road that leads eastwards to Tomen y Mur.
IIMilepost Set along the NE side of the A496 between Pont Felinrhyd-fawr and Maentwrog; c.300m NE of Pont Felinrhyd-fawr.
IIMilestone at the Oakeley Arms Set at the N side of the A487(T) at its junction with the B4410, to NE end of the small hamlet of Tan-y-bwlch. The milestone is set in a wall at the S corner of the Oakeley Arms.
IINeuadd Llewelyn Set along the W side of Bull Street (A496) at the N end of the village of Maentwrog; at the end of the row of houses in alignment with The Grapes Hotel, to S of Glan Dwyryd.
IIOld School House Slightly set back from the E side of the road leading SE off Bull Street in the village of Maentwrog; located c.100m SE of the Church of St. Twrog.
IIPandy Bach Set alongside the W side of the A487(T) on the northern approach to the village of Gellilydan.
IIPen-y-Bryn Set alongside the W side of Bull Street (A496) in the centre of the village of Maentwrog; directly ESE of the Church of St. Twrog.
IIPont Dol-rhiw-felen Spanning a tributary of the Afon Teigl, carrying the narrow country road that runs along the N side of the Vale of Ffestiniog between the A487(T) and the B4391; c.2kms ENE of Maentwrog.
II*Pont Dol-y-Moch (partly in Ffestiniog) Spanning the Afon Dwyryd about 1km SE of Rhyd-y-sarn at the SW boundary of Ffestiniog Community with Maentwrog Community, and carrying the narrow lane that runs along the north side of the Vale of Ff
IIPont Maentwrog Roadbridge spanning the Afon Dwyryd, linking the A487(T) and the A496 to N of the village of Maentwrog.
IIPont Tafarn-helyg Spanning the Afon Tafarn-helyg and carrying the road that branches SW off the A487(T) into the village of Gellilydan.
IIRailway Bridge to W of Tan-y-bwlch Station Railway bridge carrying the Ffestiniog railway over the B4410 on the northern approach to the small hamlet of Tan-y-bwlch; to E of Tan-y-bwlch station.
IIStable block to N of The Grapes Hotel Set along the W side of Bull Street (A496) at the N end of the village of Maentwrog; located to N of the Grapes Hotel.
IIStable block to S of The Old Rectory Set along the W side of Bull Street (A496) at the N end of the village of Maentwrog; to N of The Grapes Hotel and S of The Old Rectory.
IIStable to SE of Cynfal Fawr Farmhouse Set back from the SW side of a country road leading W off the A470(T) at Bont Newydd to the B4391; located c.2kms ENE of Gellilydan.
IITafarn Trip Sited at the SW side of a sharp bend in the B4410 directly E of Llyn Mair; to N of the small hamlet of Tan-y-bwlch.
IITafarn-helyg Set back below the SW side of the A487(T) by the junction with the road leading into the village of Gellilydan.
IITan-lan Set along the E side of Bull Street (A496) at the N end of the village of Maentwrog; opposite The Grapes Hotel.
IIThe Grapes Hotel Set alongside the W side of Bull Street (A496) towards the N end of the village of Maentwrog; located NE of the Church of St. Twrog.
IIThe Oakeley Arms Hotel Set at the N side of the A487(T) at its junction with the B4410, to NE end of the small hamlet of Tan-y-bwlch.
IIThe Old Rectory Set along the W side of Bull Street (A496) at the N end of the village of Maentwrog; located to NE of the Church of St. Twrog.
IIThe White Barn In a slightly elevated position, set back from the SE side of the A487(T) in the centre of the small hamlet of Tan-y-bwlch.
IITollgate Cottage aka Cerdwyd Located at the E side of the A496 at the N end of the village of Maentwrog; directly SE of Pont Maentwrog.
IITy'r Felin Set alongside the NW side of the A487(T) in the centre of the small hamlet of Tan-y-bwlch.
IIYr Hen Ysgubor aka Barton Lodge On S side of A487, about 250m SW of junction with B 4410, aligned with road, but at a lower level.