Penrhyn Castle is a country house in Llandygai, Bangor, Gwynedd, North Wales, in the form of a Norman castle. It was originally a medieval fortified manor house, founded by Ednyfed Fychan.

St Lythans burial chamber
St Lythans burial chamber is a single stone megalithic dolmen, built around 6,000 BP (before present) as part of a chambered long barrow, during the mid-Neolithic period. From the end of the last ice age (between 10,000 and 12,000 BP), Mesolithic hunter-gatherers from Central