A comprehensive gazetteer and bibliography of the medieval castles, fortifications and palaces of England, Wales and the Islands.
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List of the medieval fortified sites of the historic county of Caernarfonshire

Questionable or Doubtful
Confidence is a statement of the site as a medieval fortification or palace
Alternative Name(s)
Aber Castle - Pen-y-Mwd and Ty'n-y-Mwd llys Abermenai; Mwd Castle; Abergwyngregyn; Llan Boduan; Bangor Timber Castle , Palace earthwork
Bangor Bishops Palace Palace masonry ruins/remnants
Bon y Dom The Castle of King Olaf; Porth Bouery Don; Porth Bon y don; Dinas camp Timber Castle no visible
Bryn Castell, Caerhun Tal Y Cafn; Castell Maelgwn Timber Castle , Palace earthwork
Caernarfon Cadnant Bridge Porth Mawr Fortified Bridge no visible
Caernarfon Castle Caernarvon; Carnarvon Timber Castle , Masonry Castle , Palace major building
Caernarfon manor of Bishop of Bangor Palace no visible
Caernarfon Town Walls Caernarvon; Kairarvon Urban Defence major building
Carn Fadryn Garn Fadryn; Carn Fadrun; Madryn; Garn Fadrun Timber Castle , Masonry Castle masonry ruins/remnants
Castell Abersoch Castell Aber-Soch; Hen Gaer; Castellmarch Timber Castle cropmark/slight earthwork
Castell Pen y Garn, Prenteg Masonry Castle no visible
Conwy Castle Conway; Aberconwy Masonry Castle , Palace major building
Conwy Town Walls Conway; Aberconwy Urban Defence major building
Criccieth Castle Cricieth Masonry Castle major building
Degannwy Castle Castle of Gannoc; Gannock; Dagaunoth; Deganwy; Hegannow Timber Castle , Masonry Castle masonry footings
Dinas Emrys Castle Castell Dinas Emrys Timber Castle , Masonry Castle , Palace masonry footings
Dolbadarn Castle Masonry Castle major building
Dolbenmaen Castle Tomen; Plas Dolbenmaen Timber Castle , Masonry Castle , Palace earthwork
Dolwyddelan Castle Dolvithalan; Doluithalan Masonry Castle major building
Edern manor of Bishop of Bangor Palace no visible
Gogarth Abbey, Great Orme Gogarth Grange Palace masonry footings
Hen Gastell, Llanwnda Timber Castle , Fortified Manor House earthwork
Nefyn Tomen Nevin Timber Castle earthwork
Pen y Castell, Garreg Olau Caer Oleu; Careg Oleu Rhiw Dafnau Maenan Timber Castle , Masonry Castle masonry footings
Pen-y-bryn, Aber Twr Llewelyn; Llewelyn's Tower; Aberguynne Gregin; Garth Celyn Pele Tower , Palace masonry ruins/remnants
Penrhyn Castle Penryne; Gafael Goronwy ab Ednyfed Tower House masonry footings
Tomen Castell, Old Dolwyddelan Timber Castle , Masonry Castle earthwork
Tomen Fawr, Llanystumdwy Dolwydln; Domen Fawr; Llanystwmdwy; Glan-llynau Timber Castle earthwork
Trefriw Treurewe; Trevriw Palace , Uncertain no visible
Ty Newydd Mount, Llannor Y Mount Timber Castle earthwork
Tyn Twr Ty'n Twr; Twr Abercaseg; Llanllechid Timber Castle , Pele Tower cropmark/slight earthwork
Bangor Castle Bangor Castell Timber Castle no visible
Bangor Town Defences Urban Defence no visible
Braich y Dinas Timber Castle earthwork
Castell Cilan Timber Castle earthwork
Castell Llanddeiniolen Tymawr Timber Castle cropmark/slight earthwork
Degannwy Town Defences Gannoc Urban Defence no visible
Gwydir Castle Gwydyr; Gweder Tower House masonry ruins/remnants
Pier Camp, Bangor Timber Castle cropmark/slight earthwork
Sinadon Snowdon; Smardon; Sinnodune; Castell Caer Lleion; Castell Caer Seion Timber Castle earthwork
Twthill, Caernarfon Timber Castle uncertain
Tyddyn Castell, Rhiw Timber Castle earthwork
Vortigern Castle, Pistyll Nant Gwrtheirn Timber Castle uncertain

This listing was last updated on Thursday, July 13, 2017  Print this page