[2] St Mary's Church at Llanfair-yng-Nghornwy is of early medieval origin and has a chancel arch dating from the 11th or 12th century.

[5] Cemlyn Bay is located in the north east of the community, and is owned by the National Trust.

It is the site of a nature reserve managed by the North Wales Wildlife Trust, which includes a lagoon separated from the sea by Esgair Gemlyn, a shingle ridge formed by longshore drift.

In 1714 Queen Anne granted William Trench the right to build a lighthouse on the rocks, and to levy dues on passing ships.

The light came into operation in 1717, but ship owners evaded payment, and Trench died in 1729, heavily in debt.