IIAnimal house and attached yard at Plas Iolyn The farm building lies immediately NW and in line with the wash-house and outbuilding at Plas Iolyn, adjacent to the house, and below the Great Barn.
IIBank House The two cottages are at the lower end of Nebo Road, by the junction with the Holyhead Road.
IIBarn at Gilar Gilar lies at the end of a farm road, S of Rhydlydan. The barn is attached to the W end of the house, and encloses the N courtyard on the W.
IIBarn at Gilar The barn stands on the E side of the farmyard, which lies on the E side of the N courtyard of the house.
IIBarn at Plas Iolyn The building faces the farmhouse on the N side of the main yard of the farm.
IIBridge SE of Maes-gwyn farm The bridge carries the Nebo Road over the Afon Cadnant, approximately 100m SE of Maes-gwyn farm.
IIBronallt The row of estate cottages form a block fronting the Nebo Road on the E side climbing towards the church, and continuing the line established by Nos 1 and 2.
IIBryn-heilyn Bryn-Heilyn is located 650m down a farm road which branches off the Cwm Llwm Road NE of Rhydlydan. It is set on a sloping site, with stable opposite and farm yard to the E.
IICarriage house at Voelas The carriage house forms the S side of the service courtyard, E of the house, and backs on to the walled garden.
IICartshed at Gallt-y-celyn The farm stands above the road near the W boundary of the community. The carthouse stands to the W of the farmyard, opening towards the house.
IICastell The house was originally one of a group of 3 on a low stony plateau bounded on the N by the Afon Merddwr, and is reached by a trackway from opposite Capel Bethel Rhydlydan.
IICernioge Farmhouse (Cerniogau-mawr) The farmhouse lies near the village of Glasfryn, at the E edge of the community, and is set back at an angle to the road, with its farm buildings set apart to the W.
IIChapel at Hafod The chapel is set at a remote crossroads on the edge of open moorland 2.75km from the junction with the A5 Holyhead Road.
IICowhouse and carthouse at Maes-gwyn The building is the more easterly of two parallel farm ranges at right angles to the road, opposite Maes-gwyn.
IICowhouse at Maes-gwyn The main cowhouse is the more westerly of two parallel farm ranges at right angles to the road, opposite Maes-gwyn.
IIDolywen The row of estate cottages form a block fronting the Nebo Road on the E side climbing towards the church, and continuing the line established by Nos 1 and 2.
IIFarm building at Maes-gwyn The farm building flanks, on the N side, the yard between the road and the house.
IIFarm building at Plas Iolyn The building forms the W side of the main yard in front of the house, and at its southern end links to the Great Barn.
IIFoelas Arms Hotel The hotel stands in the NW quadrant of the crossroads at the centre of Foelas, and extending at the side along the B5113 Nebo Road.
IIFormer farmhouse at Penrhyn Penrhyn lies 600m S of Rhydlydan, and is accessed by a farm road leading off the road to Bala.
IIGallt-y-celyn The farm stands above the road, SW of Aber-pwll crossroads S of Pentrefoelas.
II*Gatehouse at Gilar, with attached courtyard walls Gilar lies to the S of Rhydlydan, approached by a farm road. The gatehouse is on the N side of the front walled court, with an axial path leading directly to the porch of the E house.
II*Gilar The group of buildings at Gilar lies apart, to the S of the hamlet of Rhydlydan, and is reached by a minor farm road.
IIGlanrafon The building lies immediately W of the chapel on the farm road to Hafodty Hafod Dre.
IIHendre-Brys, with attached farm buildings The farm lies 550m SW of Rhydlydan, near the farm road to Plas Iolyn, and is reached by a farm track off the road running S.
IIL-shaped farm ranges at Gallt-y-celyn The farm stands at the W edge of the community, above the minor road to Ysbyty Ifan. The farm buildings define the farmyard W of the house on the S and W sides.
IILaundry, stable and bothy at Voelas The building containing the laundry, garage, stable and bothy is set transversely at the E end of the terrace across the main S front of the house.
IIMaes-gwyn The farmhouse stands parallel to the road, closing a forecourt.
IIMelin Voelas Pentrefoelas mill stands at the E end of the village, approximately 100m from the crossroads, placed gable to the road.
IIMill House The row of estate cottages form a block fronting the Nebo Road on the E side climbing towards the church, and continuing the line established by Nos 1 and 2.
IINant-y-creau Nant-y-creau farm is situated immediately N of the junction of the Denbigh Road with the A5 Holyhead Road. The farmhouse lies immediately W of the farmyard, set back behind a front garden.
IINest boxes and bee boles at Maes Merddyn Maes Merddyn farm lies on moorland in the NW part of the community, and is reached by a farm road off the Nebo Road N of Pentrefoelas.
IIOutbuilding at Maes-gwyn The building is at right angles to the road, and encloses the front yard of the farmhouse on the SE side.
IIOutbuilding at Plas Iolyn The building stands apart, E of the house, on sloping ground, now the garden, and near the approach drive.
IIParish Church The church stands on the E side of the road at the top of the rise from its junction with the A5 Holyhead Road.
IIPlas Iolyn The farm lies in the S part of the community, and is reached by a farm road running S from Rhydlydan.
IIPont Hendre-isaf (partly in Ysbyty Ifan) The bridge carries the road over the Afon Conwy on the W edge of the community, spanning the boundary with Ysbyty Ifan.
IIPont Pentre'r foelas The bridge, which adjoins the A5 Holyhead Road in the village centre, carries the minor road to Rhydlydan along the S side of the valley.
IIPont Rhydlydan The bridge is in the middle of the hamlet of Rhydlydan, carrying the S road to Pentrefoelas over the Afon Merddwr.
IIPont Twllaran The bridge adjoins the A5 Holyhead Road immediately N of the hamlet of Rhydlydan and carries the minor road to Cwm Llwm.
IIPont-yr-odyn The bridge occurs in Pentrefoelas village at the bend at the top of the main street, rising from its junction with the A5 Holyhead Road.
IIRange of buildings at Nant-y-creau The range runs N-S, enclosing the farmyard on the E side, and separated from the other farm buildings by a driftway leading out to the N.
IIStable Building at Bryn-heilyn The farm lies along a farm track between the Cwm Llwm Road N of Rhydlydan and Cwrt-y-llyn. The stable faces the farmhouse across the road.
IIStable building at Cernioge The building lies opposite Cernioge farm, and is set at an angle to the Holyhead Road, at the start of a farm road to Cwrt-y-llyn.
IISummer House at Voelas The summer house is built in with the wall between the house and the stable yard, approximately 20m from the house.
IITelephone Call-box at Hafod Hafod is at a remote crossroads on the edge of open moorland 2.75km from the junction with the A5 Holyhead Road. The call box is located close to the end of the small chapel.
IITyrpeg Mynydd The house stands close to the road on the 350m contour at the S boundary of the moorland of Mynydd Hiraethog.
II*Voelas Voelas Estate lies on the W edge of the community, W of Pentrefoelas. The house stands in its own parkland overlooking the picturesque narrow valley of the Afon Conwy.
IIWynne-Finch Memorial The memorial stands in a paved area in the SW quadrant of the crossroads at the centre of Pentrefoelas.
IIY golchdy (also known as Yr hen ladd-dy) The building stands at the top of the hill rising from the junction with the Holyhead Road, backing on to the small brook.
IIYr Hen Ysgol The building lies alongside the road immediately W of the bridge at the sharp bend.