Aberlleiniog Castle is a little-known Scheduled Ancient Monument, situated near Penmon.

It nestles at the heart of a peaceful woodland nature reserve, close to the shores of the beautiful Menai Strait, within the Anglesey Area of Outstanding Natural Beauty (AONB).

The castle is owned by Menter Môn, Anglesey's enterprise and rural development agency. It is managed by a steering group of local representatives. The management priorities for the site include its historical and cultural interest, nature conservation and public access.

Aberlleiniog Castle's natural surroundings and unique history set it apart from any other ancient monument.

Its captivating story abounds with colourful characters, including Welsh princes, Norman overlords, Viking raiders, traitors, pirates, Civil War commanders, wealthy estate owners and Georgian naturalists. It has something to capture everyone's imagination.

Aberlleiniog truly is a 'secret' castle, with many secrets still to be uncovered!

The castle is open to the public all year round, free of charge.