Certain |
Possible |
Questionable Doubtful |
Rejected |
|
Confidence is a statement of the site as a medieval fortification or palace |
| Name | Alternative Name(s) | Type | Remains |
| Abergavenny Castle | Y Fenni; Bergevenn; Gevenu | Timber Castle Masonry Castle |
Major |
| Abergavenny Town Walls | Y Fenni | Urban Defence | Masonry ruins/remnants |
| Ballan Moor; The Berries | Crick; Ballan Mount | Timber Castle | Earthworks | Bishopston, Monmouthshire manor of Bishop of Llandaff | Bishton | Palace | Nothing visible | Bishton Castle | Lankes Castle | Timber Castle | Cropmarks/slight earthworks |
| Cae Wall Wood Motte, Langstone | Pool Head Motte | Timber Castle | Earthworks |
| Caer Castell, St Mellons | Pen y pil; Witla Court; Cae Castle | Timber Castle | Earthworks | Caer Licyn | Kemeys Inferior; Gaer Licyn | Timber Castle | Earthworks |
| Caerleon Castle | Caerllion | Masonry Castle Timber Castle |
Masonry ruins/remnants | Caerleon Town Walls | Caerllion | Urban Defence | Masonry foundations |
| Caerwent Motte | Castell Gwent | Timber Castle | Earthworks | Caerwent Town Walls | Urban Defence | Major |
| Caldicot Castle | Caldecot; Conscuit | Masonry Castle Timber Castle |
Major |
| Cas Troggy Castle | Taroggy; Torrogy; Striguil; Struggle | Masonry Castle | Uncertain |
| Castell Crov, Bettws Newydd mound | Timber Castle | Earthworks | |
| Castell Glas | Greenfield; Green Castle; Maes Glas; Maesglas Castle | Masonry Castle Timber Castle |
Earthworks |
| Castell Meredydd | Machen | Masonry Castle Timber Castle |
Masonry foundations |
| Castell Prin | Castell Pren Wood | Timber Castle | Earthworks |
| Castell Taliorum, Llanhilleth | Castell Taliurum; Llanhithel; Castell Hithell | Masonry Castle Timber Castle |
Masonry foundations | Castle Arnold, Llangattock nigh Usk | Castle Arnault; Castell Arnallt | Timber Castle | Cropmarks/slight earthworks | Castle near Penrhos Church | Timber Castle | Uncertain |
| Castle Tump, Caerwent | Whitewall Brake | Uncertain | Masonry foundations |
| Chepstow Castle | Strigoil; Strigul; Striguil Estrighoel; Estrighoiel | Masonry Castle | Major | Chepstow Park Wood Earthwork, Devauden | Timber Castle | Earthworks |
| Chepstow Town Wall | Port Wall | Urban Defence | Major | Coed y Fedw Tump | Dingestow | Timber Castle | Uncertain | Cwrt y Gaer Ringwork, Wolvesnewton | Timber Castle | Earthworks |
| Deepweir Tump | Dewstow | Timber Castle | Uncertain |
| Dingestow Castle | Landinegath; Llandingat; Landinegat | Masonry Castle Timber Castle |
Earthworks |
| Dinham Castle | Cestilldinan | Masonry Castle Timber Castle |
Masonry ruins/remnants |
| Dixton Motte | Timber Castle | Earthworks | Goytre Wood Motte | Castell Goetre; Gwern Castle | Timber Castle | Earthworks | Graig Foel, Llanbadoc | Timber Castle | Earthworks | Graig Wood, Caerleon | Caerllion; Llantarnam; Graig-yr-Eurych. | Timber Castle | Earthworks |
| Grosmont Castle | Grismond; Grossemont | Masonry Castle Timber Castle |
Major |
| Hendre Hafaidd Ringwork, Llanddewi Rhydderch | Hendre Hadaidd; Cae Moat Camp | Timber Castle | Cropmarks/slight earthworks |
| Kemeys House | Kemys House | Pele Tower | Masonry ruins/remnants |
| Kemeys Inferior Motte | Kemys Motte; Gipsies Mount; Gypsies Tump | Timber Castle | Earthworks |
| Langstone Court Motte | Masonry Castle Timber Castle |
Earthworks | |
| Llanfair Discoed Castle | Llanvair Discoed | Masonry Castle | Masonry ruins/remnants |
| Llangibby Castle | Castell Tregrug; Tregreg; Trigruck | Masonry Castle | Masonry ruins/remnants |
| Llangibby Motte | The Bowling Green; Llangybi; Tregrug | Masonry Castle Timber Castle |
Earthworks |
| Llangwm Uchaf | Camp House; Beiliau Llangwm | Timber Castle | Earthworks |
| Llanllowel Castle | Timber Castle | Nothing visible | |
| Llanmelin Wood Lesser Enclosure | Timber Castle | Earthworks | |
| Llantrisant Fawr Castle | Timber Castle | Nothing visible | Llanvaches Castle | Llanfaches | Masonry Castle | Cropmarks/slight earthworks | Maindee Camp | Casnewydd; Newport | Timber Castle | Cropmarks/slight earthworks | Mathern Bishops Palace | Palace | Masonry ruins/remnants |
| Mill Wood Motte, Dingestow | The Mound; Llandingat | Timber Castle | Earthworks |
| Monmouth Castle | Mingui; Mori | Masonry Castle Timber Castle |
Masonry ruins/remnants |
| Monmouth Town Walls and Defences | Mingui; Clawdd Du | Urban Defence | Masonry ruins/remnants |
| Monnow Bridge Gate, Monmouth | Urban Defence | Major | Moynes Court | Fortified Manor House | Masonry ruins/remnants |
| Newcastle, Llangattock Vibon Avel | Timber Castle | Earthworks | Newport Castle, Gwent | Casnewydd; Novus Burgus | Masonry Castle | Masonry ruins/remnants |
| Newport Town Defences | Casnewydd; Novus Burgus | Urban Defence | Nothing visible |
| Oldcastle, Crucorney | Timber Castle | Earthworks | |
| Pant y colin | Pantycollin; Pant-y-colie; Pant-y-celyn | Timber Castle | Uncertain | Panteg Motte | Rectory | Timber Castle | Earthworks |
| Pen y Clawdd Castle, Crucorney | Llantilio Pertholey; Penyclawdd Court | Timber Castle | Earthworks |
| Pencoed Castle | Pencoyd | Masonry Castle | Masonry ruins/remnants |
| Penhow Castle | Masonry Castle Timber Castle |
Major | |
| Penrhos Castle | Penros; Penros Farm; Coed y mount | Timber Castle | Earthworks |
| Raglan Castle | Ragland; Yellow Tower of Gwent | Masonry Castle Timber Castle |
Major |
| Red Castle | Ty Coch | Uncertain | Earthworks |
| Rhiwderin Camp | Rhiwderyn; Cae Tumpyn ring | Timber Castle | Earthworks | Rockfield Castle, Llangattock Vibon Avel | Timber Castle | Cropmarks/slight earthworks | Rockfield Farm Motte, Llangwm Isaf | New House | Timber Castle | Earthworks | Rogerstone Castle | Tribginlion | Timber Castle Masonry Castle |
Cropmarks/slight earthworks |
| Rumney Castle | Rhymney; Cae Castell; Reigni; Remni; Renni; Remmi | Masonry Castle Timber Castle |
Earthworks |
| Runston Manor House | Fortified Manor House | Masonry foundations | |
| Skenfrith Castle | Ynys Gynwreid; Skinffrith | Masonry Castle | Major | Skenfrith Village Defences | Urban Defence | Cropmarks/slight earthworks |
| St Illtyds Castle, Llanhilleth | Twyn; Llanhithel; Castell Hithell; Y Tump; Twmp Siencyn Sion; Twmp y Castell | Timber Castle | Earthworks |
| St Marys Yard Mound, Llanfair Kilgeddin | Llanfair Kilgedin; St Mary Hill | Timber Castle | Earthworks |
| Stow Hill Motte | Newport; Casnewydd; Twyn Gwnlliw | Timber Castle | Nothing visible |
| Tre Castle, Raglan | Llangovan; Pen y Clawdd; Trecastle | Timber Castle | Earthworks | Tre Fedw; The Moat | Treveddw; Coucorney Fawr; Bwlch Trewen | Timber Castle | Earthworks |
| Tredegar Fort, Gaer | Newport | Timber Castle | Earthworks | Trelech Town Defences | Trellech; Tryleg; Trelleck; Trillech | Urban Defence | Cropmarks/slight earthworks |
| Treowen Ringwork, Mitchel Troy | Timber Castle | Earthworks | Trostrey Castle | Masonry Castle Timber Castle |
Earthworks |
| Tump Terret, Trellech | Trelleck; Trillech | Timber Castle | Earthworks |
| Twm Barlwm, Risca | Twyn Bar-lwm; Twm barlwm; Craig y Neuadd | Timber Castle | Uncertain | Twyn Bell Camp, Llanbadoc | Timber Castle | Earthworks |
| Twyn Tudur, Mynddislwyn | Twyn Tudor | Timber Castle | Earthworks |
| Twyn y Gregen, Llanarth | Twyn y Cregen | Timber Castle | Earthworks |
| Upper Pen y Clawdd Ringwork | Timber Castle | Cropmarks/slight earthworks | |
| Usk Castle | Brynbuga; Brunebegy; Burenbegie; Huske; Uske; Oscae | Masonry Castle Timber Castle |
Major |
| Usk Town Banks | Brynbuga; Clawdd du | Urban Defence | Cropmarks/slight earthworks | Wentloog Castle | Castleton; Wentlloog; Castell Coch; Castell Behan; Remmi; Remni | Timber Castle | Earthworks | Wern y Cwrt Motte, Bryngwyn | Timber Castle | Earthworks |
| White Castle | Llantilio Castle; Blanc Castle | Masonry Castle | Major | Whitecastle Town Defences | Urban Defence | Nothing visible |