IIBridge over Sirhowy River at Gelligroes Bridge forms part of the S boundary between Pontllanfraith and Ynysddu; adjacent to the mill complex and small hamlet of Gelli-groes; reached by a side road running SE from Newport Road (A4048).
IICwmbrynar aka Cwmbraenar Cottage Approximately 0.75km E of Pontllanfraith and the Sirhowy River. Set back from the main road behind rubble walled and gated forecourt.
IIFormer Mynyddislwyn Urban District Council Offices In the centre of Pontllanfraith, facing the site of the former railway station and dismantled railway; standing on a walled and railed terrace a little above the roadway with steps to right and vehicu
IIGarden Wall at Penllwyn Surrounds the former Manor, the front section incorporating a gateway.
II*Gelli-groes Mill Reached by a side road running SE from Newport Road (A4048); the Mill faces the Sirhowy River and the bridge and is within a grassy enclosure which retains sluices, channelled millrace and tail race,
IIGelli-groes Millhouse and attached Barn Reached by a side road running SE. from Newport Road (A4048); the Millhouse faces the minor road bridge over the Sirhowy River.
IIHeather Cottage In the centre of the small hamlet of Gelli-groes, on a side road leading off the main Newport Road and almost opposite Siloh chapel.
IIMonument to Thomas Henry Thomas at New Bethel On the S side of the chapel, a little N of the James Thomas monument and also by the wall dividing the original cemetery from the later extension.
IIMonuments to James Thomas and family at New Bethel In New Bethel graveyard, on the S side of the chapel, the figure monument on the boundary wall between the old cemetery and the extension with the tomb chest below.
IINew Bethel Chapel On the long hill road leading to Mynyddislwyn church, on the rural hillside overlooking the Sirhowy valley.
IIShangri-la Towards W of the community, on a corner site with Hill Road, set in a sloping garden.
IISiloh Presbyterian Church In the small hamlet of Gelli-groes, on a side street N of the main Newport Road, set back from the road within a small walled graveyard with houses close on each side.