List of Cadw properties

Cadw is the historic environment service of the Welsh Government which manages historical buildings and ancient monuments in Wales.

Property	Image	Type	Access	Unitary authority	Community	Historic County	Grid Reference	Coordinates	Ref.
Barclodiad y Gawres		Burial Chamber	Free	Isle of Anglesey	Aberffraw	Anglesey	SH329707	53°12′26″N 4°30′13″W / 53.2072°N 4.5036°W / 53.2072; -4.5036 (Barclodiad y Gawres Burial Chamber)	[1]
Basingwerk Abbey		Religious	Free	Flintshire	Holywell	Flintshire	SJ196774	53°17′17″N 3°12′27″W / 53.288°N 3.2074°W / 53.288; -3.2074 (Basingwerk Abbey)	[2]
Beaumaris Castle		Castle World Heritage Site.[3]	Pay	Isle of Anglesey	Beaumaris	Anglesey	SH607762 postcode LL58 8AP	53°15′54″N 4°05′23″W / 53.2649°N 4.0897°W / 53.2649; -4.0897 (Beaumaris Castle)	[4]
Blaenavon Ironworks		Industrial World Heritage Site.[5]	Free	Torfaen	Blaenavon	Monmouthshire	SO249092 postcode NP4 9RN	51°46′37″N 3°05′21″W / 51.777°N 3.0892°W / 51.777; -3.0892 (Blaenavon Ironworks)	[6]
Bodowyr		Burial Chamber	Free	Isle of Anglesey	Llanidan	Anglesey	SH462681	53°11′18″N 4°18′10″W / 53.1882°N 4.3029°W / 53.1882; -4.3029 (Bodowyr Burial Chamber)	[7]
Brecon Gaer		Roman Fort	Free	Powys	Yscir	Brecknockshire	SO003296	51°57′23″N 3°27′06″W / 51.9565°N 3.4517°W / 51.9565; -3.4517 (Brecon Gaer Roman Fort)	[8]
Bronllys Castle		Castle	Free	Powys	Bronllys	Brecknockshire	SO149347	52°00′16″N 3°14′27″W / 52.0044°N 3.2407°W / 52.0044; -3.2407 (Bronllys Castle)	[9]
Bryn Celli Ddu		Burial Chamber	Free	Isle of Anglesey	Llanddaniel Fab	Anglesey	SH507701	53°12′28″N 4°14′10″W / 53.2077°N 4.2361°W / 53.2077; -4.2361 (Bryn Celli Ddu Burial Chamber)	[10]
Bryntail		Industrial	Free	Powys	Llanidloes Without	Montgomeryshire	SN913868	52°28′08″N 3°36′03″W / 52.4688°N 3.6008°W / 52.4688; -3.6008 (Bryntail Lead Mine Buildings)	[11]
Caer Gybi		Roman Fort	Free	Isle of Anglesey	Holyhead	Anglesey	SH247826	53°18′42″N 4°37′55″W / 53.3116°N 4.632°W / 53.3116; -4.632 (Caer Gybi Roman Fortlet)	[12]
Caer Lêb		Enclosure	Free	Isle of Anglesey	Llanidan	Anglesey	SH472674	53°10′55″N 4°17′12″W / 53.1819°N 4.2866°W / 53.1819; -4.2866 (Caer Lêb)	[13]
Caer y Tŵr		Hill Fort	Free	Isle of Anglesey	Trearddur	Anglesey	SH219829	53°18′47″N 4°40′29″W / 53.3131°N 4.6747°W / 53.3131; -4.6747 (Caer y Tŵr)	[14]
Caerleon Roman Fortress		Roman Fort	Free	Newport	Caerleon	Monmouthshire	ST337906	51°36′37″N 2°57′32″W / 51.6103°N 2.9588°W / 51.6103; -2.9588 (Caerleon Roman Fortress and Baths)	[15]
Caernarfon Castle		Castle World Heritage Site.[3]	Pay	Gwynedd	Caernarfon	Caernarvonshire	SH477626 postcode LL55 2AY	53°08′22″N 4°16′37″W / 53.1394°N 4.277°W / 53.1394; -4.277 (Caernarfon Castle)	[16]
Caernarfon town walls		Town Walls World Heritage Site.[3]	Free	Gwynedd	Caernarfon	Caernarvonshire	SH479626	53°08′28″N 4°16′31″W / 53.141°N 4.2754°W / 53.141; -4.2754 (Caernarfon Town Walls)	[17]
Caerphilly Castle		Castle	Pay	Caerphilly	Caerphilly	Glamorganshire	ST155870	51°34′35″N 3°13′14″W / 51.5763°N 3.2206°W / 51.5763; -3.2206 (Caerphilly Castle)	[18]
Caerwent		Roman Town	Free	Monmouthshire	Caerwent	Monmouthshire	ST469907	51°36′45″N 2°46′06″W / 51.6126°N 2.7683°W / 51.6126; -2.7683 (Caerwent Roman Town)	[19]
Capel Garmon		Burial Chamber	Free	Conwy	Bro Garmon	Denbighshire	SH817543	53°04′23″N 3°45′57″W / 53.073°N 3.7658°W / 53.073; -3.7658 (Capel Garmon Burial Chamber)	[20]
Capel Lligwy		Religious	Free	Isle of Anglesey	Moelfre	Anglesey	SH499863	53°21′08″N 4°15′23″W / 53.3523°N 4.2564°W / 53.3523; -4.2564 (Capel Lligwy)	[21]
Carew Cross		Religious	Free	Pembrokeshire	Carew	Pembrokeshire	SN047037	51°41′53″N 4°49′40″W / 51.698°N 4.8278°W / 51.698; -4.8278 (Carew Cross)	[22]
Carreg Cennen Castle		Castle	Pay	Carmarthenshire	Dyffryn Cennen	Carmarthenshire	SN668190	51°51′16″N 3°56′07″W / 51.8545°N 3.9352°W / 51.8545; -3.9352 (Carreg Cennen Castle)	[23]
Carreg Coetan		Burial Chamber	Free	Pembrokeshire	Newport	Pembrokeshire	SN060394	52°01′07″N 4°49′42″W / 52.0186°N 4.8282°W / 52.0186; -4.8282 (Carreg Coetan Arthur Burial Chamber)	[24]
Carswell Medieval House		Domestic	Free (Ext.)	Pembrokeshire	Penally	Pembrokeshire	SN098010	51°40′34″N 4°45′08″W / 51.676°N 4.7523°W / 51.676; -4.7523 (Carswell Medieval House)	[25]
Castell Bryn Gwyn		Prehistoric	Free	Isle of Anglesey	Llanidan	Anglesey	SH465670	53°10′42″N 4°17′52″W / 53.1784°N 4.2979°W / 53.1784; -4.2979 (Castell Bryn Gwyn)	[26]
Castell Coch		Castle	Pay	Cardiff	Tongwynlais	Glamorganshire	ST130826	51°32′10″N 3°15′18″W / 51.536°N 3.2549°W / 51.536; -3.2549 (Castell Coch)	[27]
Castell y Bere		Castle	Free	Gwynedd	Llanfihangel-y-Pennant	Merionethshire	SH667085	52°39′30″N 3°58′16″W / 52.6583°N 3.9711°W / 52.6583; -3.9711 (Castell y Bere)	[28]
Chepstow, Bulwark Camp		Prehistoric enclosure	Free	Monmouthshire	Chepstow	Monmouthshire	ST538927	51°37′52″N 2°40′08″W / 51.6312°N 2.6689°W / 51.6312; -2.6689 (Chepstow Bulwarks Camp)	[29]
Chepstow Castle		Castle	Pay	Monmouthshire	Chepstow	Monmouthshire	ST533940	51°38′37″N 2°40′32″W / 51.6437°N 2.6755°W / 51.6437; -2.6755 (Chepstow Castle)	[30]
Chepstow Port Wall		Town Walls	Free	Monmouthshire	Chepstow	Monmouthshire	ST533937	51°38′25″N 2°40′34″W / 51.6404°N 2.6762°W / 51.6404; -2.6762 (Chepstow Port Wall)	[31]
Cilgerran Castle		Castle	Pay	Pembrokeshire	Cilgerran	Pembrokeshire	SN194431	52°03′25″N 4°38′03″W / 52.0569°N 4.6342°W / 52.0569; -4.6342 (Cilgerran Castle)	[32]
Coity Castle		Castle	Free	Bridgend	Coity Higher	Glamorganshire	SS923814	51°31′20″N 3°33′12″W / 51.5221°N 3.5534°W / 51.5221; -3.5534 (Coity Castle)	[33]
Conwy Castle		Castle World Heritage Site.[3]	Pay	Conwy	Conwy	Caernarvonshire	SH783774 postcode LL32 8AY	53°16′48″N 3°49′32″W / 53.2801°N 3.8256°W / 53.2801; -3.8256 (Conwy Castle)	[34]
Conwy town walls		Town Walls World Heritage Site.[3]	Free	Conwy	Conwy	Caernarvonshire	SH780776	53°16′54″N 3°49′52″W / 53.2817°N 3.8312°W / 53.2817; -3.8312 (Conwy Town Walls)	[35]
Criccieth Castle		Castle	Pay	Gwynedd	Criccieth	Caernarvonshire	SH499377	52°54′58″N 4°13′57″W / 52.916°N 4.2324°W / 52.916; -4.2324 (Criccieth Castle)	[36]
Cymer Abbey		Religious	Free	Gwynedd	Llanelltyd	Merionethshire	SH721195	52°45′29″N 3°53′46″W / 52.7581°N 3.8962°W / 52.7581; -3.8962 (Cymer Abbey)	[37]
Denbigh Castle		Castle	Pay	Denbighshire	Denbigh	Denbighshire	SJ051657	53°10′50″N 3°25′14″W / 53.1806°N 3.4206°W / 53.1806; -3.4206 (Denbigh Castle)	[38]
Denbigh Friary		Religious	Free	Denbighshire	Denbigh	Denbighshire	SJ059665	53°11′16″N 3°24′33″W / 53.1878°N 3.4091°W / 53.1878; -3.4091 (Denbigh Friary)	[39]
Denbigh Town Walls		Town Walls	Free	Denbighshire	Denbigh	Denbighshire	SJ052657	53°10′51″N 3°25′09″W / 53.1808°N 3.4191°W / 53.1808; -3.4191 (Denbigh Town Walls)	[40]
Leicester's Church		Religious	Free	Denbighshire	Denbigh	Denbighshire	SJ053659	53°10′56″N 3°25′08″W / 53.1822°N 3.419°W / 53.1822; -3.419 (Denbigh, Leicester's Church)	[41]
St Hilary's Chapel		Religious	Free	Denbighshire	Denbigh	Denbighshire	SJ052659	53°10′54″N 3°25′11″W / 53.1818°N 3.4198°W / 53.1818; -3.4198 (Denbigh, St Hilary's Chapel)	[42]
Derwen Churchyard Cross		Religious	Free	Denbighshire	Derwen	Denbighshire	SJ070507	53°02′45″N 3°23′18″W / 53.0457°N 3.3882°W / 53.0457; -3.3882 (Derwen Churchyard Cross)	[43]
Din Dryfol		Burial Chamber	Free	Isle of Anglesey	Aberffraw	Anglesey	SH395724	53°13′30″N 4°24′17″W / 53.225°N 4.4048°W / 53.225; -4.4048 (Din Dryfol Burial Chamber)	[44]
Din Lligwy		Hut Group	Free	Isle of Anglesey	Moelfre	Anglesey	SH497861	53°21′03″N 4°15′33″W / 53.3508°N 4.2592°W / 53.3508; -4.2592 (Din Lligwy Hut Group)	[45]
Dinefwr Castle		Castle	Free	Carmarthenshire	Llandeilo	Carmarthenshire	SN622224	51°52′36″N 4°01′07″W / 51.876776°N 4.018562°W / 51.876776; -4.018562 (Dinefwr Castle)	[46]
Dolbadarn Castle		Castle	Free	Gwynedd	Llanberis	Caernarvonshire	SH586598	53°07′00″N 4°06′51″W / 53.1166°N 4.1143°W / 53.1166; -4.1143 (Dolbadarn Castle)	[47]
Dolforwyn Castle		Castle	Free	Powys	Llandyssil	Montgomeryshire	SO151950	52°32′47″N 3°15′09″W / 52.5464°N 3.2525°W / 52.5464; -3.2525 (Dolforwyn Castle)	[48]
Dolwyddelan Castle		Castle	Pay	Conwy	Dolwyddelan	Caernarvonshire	SH721523	53°03′11″N 3°54′30″W / 53.0531°N 3.9084°W / 53.0531; -3.9084 (Dolwyddelan Castle)	[49]
Dryslwyn Castle		Castle	Free	Carmarthenshire	Llangathen	Carmarthenshire	SN554203	51°51′48″N 4°06′03″W / 51.8632°N 4.1007°W / 51.8632; -4.1007 (Dryslwyn Castle)	[50]
Dyffryn Ardudwy		Burial Chamber	Free	Gwynedd	Dyffryn Ardudwy	Merionethshire	SH588228	52°47′05″N 4°05′37″W / 52.7846°N 4.0937°W / 52.7846; -4.0937 (Dyffryn Ardudwy Burial Chamber)	[51]
Dyfi Furnace		Industrial	Free	Ceredigion	Ysgubor-y-coed	Cardiganshire	SN684950	52°32′16″N 3°56′25″W / 52.5378°N 3.9404°W / 52.5378; -3.9404 (Dyfi Furnace)	[52]
Eliseg's Pillar		Religious	Free	Denbighshire	Llantysilio	Denbighshire	SJ202445	52°59′32″N 3°11′21″W / 52.9921°N 3.1893°W / 52.9921; -3.1893 (Eliseg's Pillar)	[53]
Ewenny Priory		Religious	Free	The Vale of Glamorgan	Ewenny	Glamorganshire	SS912778	51°29′20″N 3°34′03″W / 51.4888°N 3.5676°W / 51.4888; -3.5676 (Ewenny Priory)	[54]
Ewloe Castle		Castle	Free	Flintshire	Hawarden	Flintshire	SJ288675	53°12′00″N 3°04′02″W / 53.2°N 3.0672°W / 53.2; -3.0672 (Ewloe Castle)	[55]
Flint Castle		Castle	Free	Flintshire	Flint	Flintshire	SJ246732	53°15′04″N 3°07′48″W / 53.2511°N 3.1301°W / 53.2511; -3.1301 (Flint Castle)	[56]
Grosmont Castle		Castle	Free	Monmouthshire	Grosmont	Monmouthshire	SO405244	51°54′55″N 2°51′57″W / 51.9154°N 2.8657°W / 51.9154; -2.8657 (Grosmont Castle)	[57]
Gwydir Uchaf Chapel		Religious	Free	Conwy	Trefriw	Caernarvonshire	SH794609	53°07′55″N 3°48′10″W / 53.1319°N 3.8028°W / 53.1319; -3.8028 (Gwydir Uchaf Chapel)	[58]
Hafoty Medieval House		Domestic	Free (Ext.)	Isle of Anglesey	Cwm Cadnant	Anglesey	SH562781	53°16′51″N 4°09′28″W / 53.2809°N 4.1579°W / 53.2809; -4.1579 (Hafoty Medieval House)	[59]
Harlech Castle		Castle World Heritage Site.[3]	Pay	Gwynedd	Harlech	Merionethshire	SH581312 postcode LL46 2YH	52°51′37″N 4°06′33″W / 52.8602°N 4.1091°W / 52.8602; -4.1091 (Harlech Castle)	[60]
Haverfordwest Priory		Religious	Free	Pembrokeshire	Haverfordwest	Pembrokeshire	SM956151	51°47′51″N 4°57′51″W / 51.7976°N 4.9643°W / 51.7976; -4.9643 (Haverfordwest Priory)	[61]
Hen Gwrt Moated Site		Domestic	Free	Monmouthshire	Llantilio Crossenny	Monmouthshire	SO395151	51°49′53″N 2°52′42″W / 51.8315°N 2.8782°W / 51.8315; -2.8782 (Hen Gwrt Moated Site)	[62]
Holyhead Mountain Hut Circles		Hut Group	Free	Isle of Anglesey	Trearddur	Anglesey	SH212820	53°18′19″N 4°41′02″W / 53.3054°N 4.6838°W / 53.3054; -4.6838 (Holyhead Mountain Hut Circles)	[63]
Kidwelly Castle		Castle	Pay	Carmarthenshire	Kidwelly	Carmarthenshire	SN409070	51°44′23″N 4°18′20″W / 51.7398°N 4.3055°W / 51.7398; -4.3055 (Kidwelly Castle)	[64]
Lamphey Bishop's Palace		Religious	Free	Pembrokeshire	Lamphey	Pembrokeshire	SN018009	51°40′19″N 4°52′00″W / 51.672°N 4.8668°W / 51.672; -4.8668 (Lamphey Bishop's Palace)	[65]
Laugharne Castle		Castle	Pay	Carmarthenshire	Laugharne Township	Carmarthenshire	SN302107	51°46′11″N 4°27′44″W / 51.7696°N 4.4621°W / 51.7696; -4.4621 (Laugharne Castle)	[66]
Llangar Church		Religious	Pay	Denbighshire	Cynwyd	Merionethshire	SJ063424	52°58′16″N 3°23′45″W / 52.9712°N 3.3959°W / 52.9712; -3.3959 (Llangar Old Parish Church)	[67]
Llanmelin Wood Hill Fort		Hill Fort	Free	Monmouthshire	Caerwent	Monmouthshire	ST461925	51°37′45″N 2°46′46″W / 51.6291°N 2.7794°W / 51.6291; -2.7794 (Llanmelin Wood Hill Fort)	[68]
Llansteffan Castle		Castle	Free	Carmarthenshire	Llansteffan	Carmarthenshire	SN351101	51°45′56″N 4°23′27″W / 51.7655°N 4.3908°W / 51.7655; -4.3908 (Llansteffan Castle)	[69]
Llanthony Priory		Religious	Free	Monmouthshire	Crucorney	Monmouthshire	SO289278	51°56′41″N 3°02′11″W / 51.9448°N 3.0364°W / 51.9448; -3.0364 (Llanthony Priory)	[70]
Llawhaden Castle		Castle	Free	Pembrokeshire	Llawhaden	Pembrokeshire	SN073175	51°49′20″N 4°47′51″W / 51.8223°N 4.7976°W / 51.8223; -4.7976 (Llawhaden Castle)	[71]
Lligwy Burial Chamber		Burial Chamber	Free	Isle of Anglesey	Moelfre	Anglesey	SH501860	53°21′00″N 4°15′10″W / 53.3499°N 4.2529°W / 53.3499; -4.2529 (Lligwy Burial Chamber)	[72]
Loughor Castle		Castle	Free	Swansea	Llwchwr	Glamorganshire	SS564979	51°39′44″N 4°04′38″W / 51.6622°N 4.0771°W / 51.6622; -4.0771 (Loughor Castle)	[73]
Maen Achwyfan Cross		Religious	Free	Flintshire	Whitford	Flintshire	SJ128787	53°17′55″N 3°18′31″W / 53.2987°N 3.3085°W / 53.2987; -3.3085 (Maen Achwyfan Cross)	[74]
Margam Stones Museum		Religious	Pay	Neath Port Talbot	Margam	Glamorganshire	SS801864	51°33′49″N 3°43′52″W / 51.5637°N 3.7312°W / 51.5637; -3.7312 (Margam Stones Museum)	[75]
Monmouth Castle		Castle	Free	Monmouthshire	Monmouth	Monmouthshire	SO506128	51°48′45″N 2°43′00″W / 51.8125°N 2.7167°W / 51.8125; -2.7167 (Monmouth Castle)	[76]
Montgomery Castle		Castle	Free	Powys	Montgomery	Montgomeryshire	SO221967	52°33′48″N 3°09′00″W / 52.5632°N 3.1501°W / 52.5632; -3.1501 (Montgomery Castle)	[77]
Neath Abbey		Religious	Free	Neath Port Talbot	Dyffryn Clydach	Glamorganshire	SS738974	51°39′40″N 3°49′34″W / 51.6612°N 3.826°W / 51.6612; -3.826 (Neath Abbey and Gatehouse)	[78]
Newcastle Castle		Castle	Free	Bridgend	Bridgend	Glamorganshire	SS902800	51°30′32″N 3°34′59″W / 51.5089°N 3.583°W / 51.5089; -3.583 (Newcastle, Bridgend)	[79]
Newport Castle		Castle	Free	Newport	Stow Hill	Monmouthshire	ST311884	51°35′27″N 2°59′42″W / 51.5908°N 2.9951°W / 51.5908; -2.9951 (Newport Castle)	[80]
Ogmore Castle		Castle	Free	The Vale of Glamorgan	St Bride's Major	Glamorganshire	SS881769	51°28′50″N 3°36′41″W / 51.4805°N 3.6115°W / 51.4805; -3.6115 (Ogmore Castle)	[81]
Old Beaupre Castle		Castle	Free	The Vale of Glamorgan	Llanfair	Glamorganshire	ST008720	51°26′19″N 3°25′39″W / 51.4385°N 3.4274°W / 51.4385; -3.4274 (Old Beaupre Castle)	[82]
Oxwich Castle		Castle	Pay	Swansea	Penrice	Glamorganshire	SS497862	51°33′20″N 4°10′06″W / 51.5555°N 4.1683°W / 51.5555; -4.1683 (Oxwich Castle)	[83]
Parc le Breos		Burial Chamber	Free	Swansea	Ilston	Glamorganshire	SS537898	51°35′18″N 4°06′46″W / 51.5883°N 4.1128°W / 51.5883; -4.1128 (Parc le Breos Burial Chamber)	[84]
Penarth Fawr		Medieval House	?	Gwynedd	Llanystumdwy	Caernarvonshire	SH419376	52°54′48″N 4°21′09″W / 52.9132°N 4.3524°W / 52.9132; -4.3524 (Penarth Fawr Medieval House)	[85]
Penmon Cross		Religious	Free	Isle of Anglesey	Llangoed	Anglesey	SH630807	53°18′21″N 4°03′24″W / 53.3058°N 4.0568°W / 53.3058; -4.0568 (Penmon Cross)	[86]
Penmon Dovecote		Domestic	Free	Isle of Anglesey	Llangoed	Anglesey	SH631807	53°18′20″N 4°03′21″W / 53.3056°N 4.0557°W / 53.3056; -4.0557 (Penmon Dovecote)	[87]
Penmon Priory		Religious	Free	Isle of Anglesey	Llangoed	Anglesey	SH630807	53°18′20″N 4°03′24″W / 53.3055°N 4.0568°W / 53.3055; -4.0568 (Penmon Priory)	[88]
St Seiriol's Well		Religious	Free	Isle of Anglesey	Llangoed	Anglesey	SH630808	53°18′23″N 4°03′24″W / 53.3064°N 4.0566°W / 53.3064; -4.0566 (Penmon, St Seiriol's Well)	[89]
Penrhos Feilw Standing Stones		Prehistoric	Free	Isle of Anglesey	Trearddur	Anglesey	SH227809	53°17′45″N 4°39′42″W / 53.2957°N 4.6618°W / 53.2957; -4.6618 (Penrhos Feliw Standing Stones)	[90]
Pentre Ifan		Burial Chamber	Free	Pembrokeshire	Nevern	Pembrokeshire	SN099370	51°59′57″N 4°46′12″W / 51.9991°N 4.7701°W / 51.9991; -4.7701 (Pentre Ifan Burial Chamber)	[91]
Plas Mawr, Conwy		Domestic	Pay	Conwy	Conwy	Caernarvonshire	SH780775	53°16′52″N 3°49′48″W / 53.2812°N 3.83°W / 53.2812; -3.83 (Plas Mawr)	[92]
Pont Minllyn		Bridge	Free	Gwynedd	Mawddwy	Merionethshire	SH859138	52°42′38″N 3°41′21″W / 52.7106°N 3.6891°W / 52.7106; -3.6891 (Pont Minllyn)	[93]
Presaddfed		Burial Chamber	Free	Isle of Anglesey	Bodedern	Anglesey	SH347808	53°17′57″N 4°28′51″W / 53.2992°N 4.4809°W / 53.2992; -4.4809 (Presaddfed Burial Chamber)	[94]
Raglan Castle		Castle	Pay	Monmouthshire	Raglan	Monmouthshire	SO417085	51°46′13″N 2°50′59″W / 51.7702°N 2.8498°W / 51.7702; -2.8498 (Raglan Castle)	[95]
Rhuddlan Castle		Castle	Pay	Denbighshire	Rhuddlan	Flintshire	SJ024779	53°17′21″N 3°27′54″W / 53.2891°N 3.465°W / 53.2891; -3.465 (Rhuddlan Castle)	[96]
Rug Chapel		Religious	Pay	Denbighshire	Corwen	Merionethshire	SJ064438	52°59′03″N 3°23′39″W / 52.9842°N 3.3942°W / 52.9842; -3.3942 (Rug Chapel / Llangar Old Parish Church)	[97]
Runston Chapel		Religious		Monmouthshire	Mathern	Monmouthshire	ST496915	51°37′13″N 2°43′45″W / 51.6204°N 2.7293°W / 51.6204; -2.7293 (Runston Chapel)	[98]
Segontium Roman Fort		Roman Fort	Free	Gwynedd	Caernarfon	Caernarvonshire	SH485624	53°08′14″N 4°15′58″W / 53.1372°N 4.2662°W / 53.1372; -4.2662 (Segontium Roman Fort)	[99]
Skenfrith Castle		Castle	Free	Monmouthshire	Llangattock-Vibon-Avel	Monmouthshire	SO456203	51°52′43″N 2°47′25″W / 51.8786°N 2.7904°W / 51.8786; -2.7904 (Skenfrith Castle)	[100]
St Cybi's Well		Religious	Free	Gwynedd	Llangybi	Gwynedd	SH427413	52°56′45″N 4°20′32″W / 52.945735°N 4.342090°W / 52.945735; -4.342090 (St Cybi's Well)	[101]
St Davids Bishop's Palace		Religious	Pay	Pembrokeshire	St Davids	Pembrokeshire	SM750254	51°52′56″N 5°16′15″W / 51.8821°N 5.2708°W / 51.8821; -5.2708 (St Davids Bishop's Palace)	[102]
St Dogmaels Abbey		Religious	Free	Pembrokeshire	St Dogmaels	Pembrokeshire	SN164458	52°04′50″N 4°40′50″W / 52.0806°N 4.6806°W / 52.0806; -4.6806 (St Dogmaels Abbey and Coach House)	[103]
St Lythans burial chamber		Burial Chamber	Free	The Vale of Glamorgan	Wenvoe	Glamorganshire	ST100723	51°26′33″N 3°17′42″W / 51.4426°N 3.2951°W / 51.4426; -3.2951 (St Lythans Burial Chamber)	[104]
St Non's Chapel		Religious	Free	Pembrokeshire	St Davids	Pembrokeshire	SM750243	51°52′20″N 5°16′08″W / 51.8722°N 5.2689°W / 51.8722; -5.2689 (St Non's Chapel)	[105]
St Quentin's Castle, Llanblethian		Castle	Free	The Vale of Glamorgan	Cowbridge with Llanblethian	Glamorganshire	SS989741	51°27′27″N 3°27′23″W / 51.4576°N 3.4564°W / 51.4576; -3.4564 (St Quentin's Castle, Llanblethian)	[106]
St Winefride's Chapel and Holywell		Religious	Free	Flintshire	Holywell	Flintshire	SJ185762	53°16′38″N 3°13′25″W / 53.2771°N 3.2236°W / 53.2771; -3.2236 (St Winifred's Chapel and Holy Well)	[107]
Strata Florida Abbey		Religious	Pay	Ceredigion	Ystrad Fflur	Cardiganshire	SN746657	52°16′31″N 3°50′18″W / 52.2752°N 3.8383°W / 52.2752; -3.8383 (Strata Florida Abbey)	[108]
Swansea Castle		Castle	Free (External only)	Swansea	Swansea	Glamorganshire	SS657930	51°37′14″N 3°56′28″W / 51.6205°N 3.9411°W / 51.6205; -3.9411 (Swansea Castle)	[109]
Talley Abbey		Religious	Free	Carmarthenshire	Talley	Carmarthenshire	SN632327	51°58′35″N 3°59′32″W / 51.9765°N 3.9922°W / 51.9765; -3.9922 (Talley Abbey)	[110]
Tinkinswood		Burial Chamber	Free	The Vale of Glamorgan	St Nicholas and Bonvilston	Glamorganshire	ST092732	51°27′05″N 3°18′26″W / 51.4513°N 3.3072°W / 51.4513; -3.3072 (Tinkinswood Burial Chamber)	[111]
Tintern Abbey		Religious	Pay	Monmouthshire	Tintern	Monmouthshire	SO533000	51°41′49″N 2°40′36″W / 51.6969°N 2.6768°W / 51.6969; -2.6768 (Tintern Abbey)	[112]
Trefignath		Burial Chamber	Free	Isle of Anglesey	Trearddur	Anglesey	SH258805	53°17′36″N 4°36′51″W / 53.2932°N 4.6142°W / 53.2932; -4.6142 (Trefignath Burial Chamber)	[113]
Tregwehelydd Standing Stone		Prehistoric	Free	Isle of Anglesey	Tref Alaw	Anglesey	SH340831	53°19′10″N 4°29′33″W / 53.3195°N 4.4926°W / 53.3195; -4.4926 (Tregwehelydd Standing Stone)	[114]
Tretower Castle		Castle	Pay	Powys	Llanfihangel Cwmdu	Brecknockshire	SO184212	51°53′02″N 3°11′10″W / 51.8839°N 3.1862°W / 51.8839; -3.1862 (Tretower Castle)	[115]
Tretower Court		Castle	Pay	Powys	Llanfihangel Cwmdu	Brecknockshire	SO185211	51°53′00″N 3°11′05″W / 51.8832°N 3.1846°W / 51.8832; -3.1846 (Tretower Court)	[116]
Twthill		Castle Mound	Free	Denbighshire	Rhuddlan	Flintshire	SJ026776	53°17′14″N 3°27′43″W / 53.2871°N 3.4619°W / 53.2871; -3.4619 (Twthill, Rhuddlan)	[117]
Tŷ Mawr Standing Stone		Prehistoric	Free	Isle of Anglesey	Holyhead	Anglesey	SH253809	53°17′48″N 4°37′17″W / 53.2967°N 4.6214°W / 53.2967; -4.6214 (Ty Mawr Standing Stone)	[118]
Tŷ Newydd Burial Chamber		Burial Chamber	Free	Isle of Anglesey	Llanfaelog	Anglesey	SH344738	53°14′09″N 4°28′57″W / 53.2359°N 4.4824°W / 53.2359; -4.4824 (Tŷ Newydd Burial Chamber)	[119]
Valle Crucis Abbey		Religious	Pay	Denbighshire	Llantysilio	Denbighshire	SJ204441	52°59′20″N 3°11′12″W / 52.9888°N 3.1867°W / 52.9888; -3.1867 (Valle Crucis Abbey)	[120]
Weobley Castle		Castle	Pay	Swansea	Llanrhidian Lower	Glamorganshire	SS478927	51°36′46″N 4°11′57″W / 51.6128°N 4.1993°W / 51.6128; -4.1993 (Weobley Castle)	[121]
White Castle		Castle	Free	Monmouthshire	Llantilio Crossenny	Monmouthshire	SO379167	51°50′46″N 2°54′08″W / 51.8461°N 2.9022°W / 51.8461; -2.9022 (White Castle)	[122]
Wiston Castle		Castle	Free	Pembrokeshire	Wiston	Pembrokeshire	SN022181	51°49′36″N 4°52′16″W / 51.8268°N 4.8711°W / 51.8268; -4.8711 (Wiston Castle)	[123]