Castell Aberlleiniog (c) Mike Searle
Castell Aberlleiniog

Castell Aberlleiniog is a Norman motte surrounded by a ditch, built around 1088 for Hugh d'Avranche, the powerful first Earl of Chester. The early structure was replaced during the Civil War with a stone building surrounded by a curtain wall.

It is the only motte and bailey castle on Anglesey, and was apparently used by the Home Guard in WW II.

The stone ramparts you can see at the top of the castle mound are part of the Civil War defences and not the original medieval structure.