IICapel Horeb Located near the centre of Brynsiencyn, set back slightly from the E side of the A4080.
IICapel Horeb Assembly rooms Located to the left, and in the grounds of, Capel Horeb, set back slightly from the E side of the A4080 near the centre of Brysiencyn.
IICapel Libanus Located on the E side of Brynsiencyn, c150m S of the junction with the A4080.
IIChurch of St. Nidan (new church) Located within a walled churchyard, c750m NW of the old Church of St. Nidan, and c.500m NE of Brynsiencyn, on the N side of the A4080.
IIHen Ysgol and Church Hall Located on a side road on the N side of the A4080 Brynsiencyn Road, c150m W of the Church of St. Nidan (New Church).
II*Llanidan Hall Located 20m S of the Church of St. Nidan (old church), c1.2 km E of Brynsiencyn, set within a boundary wall.
IIMelin Bodowyr Located to the S of Melin Bodowyr farmhouse, on the N side of an unmarked road between the farms of Llys Lew and Bodrida, c 2km NE of Brynsiencyn.
IIPont Melin Bodowyr Located c2 km NE of Brynsiencyn, spanning an un-named river draining from Rhos y Llyn, immediately E of Melin Bodowyr.
IIPorthamel Located 700m SE of the A4080 Brynsiencyn Road, at the end of a single track drive. In front of the house is a walled terrace with dressed coping; central steps down to the lawn are flanked by dressed
IIPrivy tower at Porthamel Located to the S of Porthamel house, in the corner of the garden. The tower is set alongside a former road (now disused) leading up from the the Menai Strait.
II*St. Nidan's Church (Old Church) Set within a stone walled circular churchyard, 20m N of Llanidan House, and c750m SE of the new Church of St. Nidan.
IITai Cochion Located c1.5km S of Brynsiencyn, at the end of a short drive leading off a minor road leading to the edge of the Menai Strait.
IITrefarthen Located c800m S of Brynsiencyn, at the end of a slate-fenced and walled farm road. The house overlooks parkland with slate-fenced stands of trees, and towards the Menai Strait c450m to the E. Behind t
IITy Capel Located on a side road on the E side of Brynsiencyn, abutting Rhon Capel (which is now a community centre). In front of the N side of the cottage is a small walled garden with a wrought iron gate.