Oriel Ynys Môn is a museum and arts centre in Llangefni, covering the history and art of Anglesey from prehistoric times to the present. The name translates simply as "the Gallery of the Isle of Anglesey," and it is the island's main cultural institution. The permanent collection runs from Neolithic burial finds and Celtic metalwork through the Roman occupation — when Anglesey was the last druidic stronghold, sacked by the Roman governor Paulinus in AD 60 — and on to more recent history and contemporary Welsh art.
The gallery section is particularly strong on Charles Tunnicliffe, the wildlife artist who settled on Anglesey in 1947 and documented its birds, livestock, and coastal life with meticulous care until his death in 1979. His work is precise and warm, the record of someone who genuinely knew the place. Temporary exhibitions run throughout the year alongside the permanent displays.