Moated Beaumaris Castle , begun as part of Edward I's defenses to keep Wales subdued, was never finished. It is a World Heritage listed site. It houses a massive mural painted by Rex Whistler and an exhibition about his work. It's a 19th century name adopted for its tourist value, and not the original name of the village. It is the largest town on Anglesey and is a popular destination for sports and beach activities.
Ferries go from here to Dublin, Ireland.
Ancient hut circles are found on Holyhead Mountain. At the town of Llangefni, the Oriel Ynys Mon Museum contains displays on Anglesey's history, culture and environment.