Antrim
Armagh
Carlow
- Aghade Holed Stone
- Ballyloughan Castle
- Ballymoon Castle
- Brownshill Portal Dolmen
- Carlow Castle
- Clonmore Castle
- Dunleckney Manor
- Huntington Castle
- Killoughternane Church
- Leighlinbridge Castle
- Saint Mullins Ecclesiastical Village
- The Black Castle
Cavan
- Bracklin Cairn
- Cloughoughter Castle
- Cohaw Court Cairn
- Corraweelis Cairn
- Crover Castle
- Drumlane Abbey and Round Tower
- Errigal Ringfort
- Gartnanoul Court Cairn
- Lisnagowan Ringfort
- Moneygashel Cashel
- Moyer Cairn
Clare
- Aughavinna Fort
- Ballinalacken Castle
- Ballysheen Church
- Brian Boru’s Fort
- Cahercommaun Stone Fort
- Caherhurly ringfort
- Cahermacnaghten Ringfort
- Callahy Standing Stone
- Canon Island Abbey
- Carrigaholt Castle and Sea Wall
- Castlebawn Castle
- Clare Augustinian Abbey
- Corcomroe Cistercian Abbey
- Craggaunowen Castle
- Doonagore Castle
- Dromore Castle
- Drumcliffe Church and Round Tower
- Dysert O’Dea Church, High Cross, and Round Tower
- Ennis Friary
- Glasha Fort
- Inis Cealtra
- Inishcaltra Monastic Site
- Kilfenora Cathedral and High Crosses
- Kilkee Castle
- Killilagh Church
- Killone Augustinian Abbey
- Leamaneh Castle
- Magh Adhair
- Mooghaun Hillfort
- Newtown Castle
- O'Grady Castle
- Poulnabrone Portal Tomb
- Quin Franciscan Friary
- Scattery Island Monastic Site
- St. Cronan's Church, Tuamgraney
- St. Flannan’s Church
- Tau Cross / Cross Inneenboy
Cork
- Altar Wedge Tomb
- Ardra Fort
- Athnowen Church
- Ballinguile Castle
- Ballyannan Castle
- Ballybeg Augustinian Priory
- Ballycrovane Ogham Stone
- Ballynacarriga Castle
- Barnahely Castle
- Barryscourt Castle
- Beamish Mausoleum
- Black Ball Head Signal Tower
- Blarney Castle
- Breeny More Stone Circle
- Buttevant Castle
- Buttevant Franciscan Friary
- Cahermone Castle
- Cahervagliar Ringfort
- Carntierna Hillfort
- Carrigaphooca Castle
- Carrigaphooca Stone Circle
- Carrignamuck Castle (Dripsey Castle)
- Carrigrenan Tower
- Carrigrohane Castle
- Castle Barry
- Castledonovan Castle
- Castlehaven Castle
- Castle Ire
- Castlelyons Carmelite Priory
- Castle Townshend
- Charles Fort Military Fortress
- Clodagh Standing Stones
- Conna Castle
- Coolcoulaghta Standing Stones
- Coole Upper Churches
- Coppingerstown Castle
- Desmond Castle Kinsale
- Desmond Tower, Buttevant
- Drombeg Stone Circle
- Elizabeth Fort
- Farrannahineeny Stone Row
- Fota Tower
- Glanworth Castle
- Greenhill Ogham Stones
- Island Wedge Tomb
- James Fort
- Kanturk Castle
- Kealkill Stone Circle
- Kedge Point Signal Tower
- Kilcrea Castle
- Kilcrea Franciscan Friary
- Kilcrea Friary
- Kilnaglory Church and Graveyard
- Kinneigh Round Tower
- Knockdrum Stone Fort
- Knocknakilla Stone Circle
- Labbacallee Wedge Tomb – Giants Grave
- Labbamolaga Ecclesiastical Enclosure
- Lettertinlish Castle
- Liscarroll Castle
- Magourney Parish Church
- Mallow Castle
- Maughanasilly Stone Row
- Michael Collins Birthplace
- Mogeely Castle
- Mount Gabriel Mining Complex
- North Abbey – Dominican Friary
- Red Abbey Tower
- Robert's Head Signal Tower
- Rock Abbey Dominican House, Glanworth
- Seven Heads Signal Tower
- Sherkin Franciscan Friary
- Siddons Tower
- Skeagh Ring Barrow and Cairn
- Star Shaped Fort
- Swift's Tower
- Swifts Tower
- Timoleague Franciscan Friary
- Toe Head Signal Tower
- Tullylease Church
Derry
Donegal
- Beltany Stone Circle
- Bocan Stone Circle
- Clonca Church and High Cross
- Donegal Castle
- Drumboe Castle
- Dún Bhaloir
- Father Hegarty's Rock
- Grianán of Aileach
- Kilclooney Dolmen
- Newmills Corn and Flax Mills
- Northburg Castle
- O'Doherty's Castle (Burt Castle)
- O’Doherty’s Keep
- Raphoe Cathedral
Down
- Ardtole Church
- Bagenal's Castle
- Crawtree Dolmen (Kilkeel Portal Tomb)
- Greencastle Royal Castle
- Inch Abbey
- Mound of Down
Dublin
- Archbold’s Castle
- Baldongan Castle
- Belgard Castle
- Bob's Castle
- Brenanstown Portal Tomb
- Calbeck Castle
- Carrickmines Castle
- Carty's Castle
- Casino Marino
- Christ Church Cathedral
- Clondalkin Round Tower
- Dalkey Island Church
- Donnybrook Graveyard
- Drimnagh Castle
- Dublin Castle
- Dunsoghly Castle
- Glencullen Standing Stone
- Hell Fire Club
- Howth Church
- Kilgobbin High Cross
- Killakee Wedge Tomb
- Killiney Church
- Kill of the Grange Ecclesiastical Site
- Kilmainham Gaol
- Kilmashogue Passage Tomb
- Kiltiernan Portal Tomb
- Knocklyon Castle
- Knockmaree Cist
- Lambay Castle
- Lusk Round Tower and Belfry
- Luttrellstown Castle
- Malahide Castle
- Massy's Wood
- Moore Street (no. 14 – 17)
- Old Templeogue Church
- Pearse Museum – St. Enda’s Park
- Portrane Castle
- Rathfarnham Castle
- Rathmichael Ecclesiastical Site
- St Audoen’s Church
- St. Mary’s Abbey – Chapter House – Cistercian Monastery
- Swords Castle
- Tallaght Castle
- Tibradden Cairn
- Tully Church
Fermanagh
Galway
- Abbeyknockmoy Cistercian Abbey
- Annaghkeen Castle
- Ardamullivan Castle
- Athenry Dominican Priory
- Aughnanure Castle
- Bunowen Castle
- Caisleán Aircín (Arkin’s Castle)
- Carraigin Castle
- Castlekirk Castle
- Cill Ráine Cashel
- Claregalway Franciscan Friary
- Clifden Castle
- Clonbrock Castle
- Cloonacauneen Castle
- Craughwell Ringfort
- Doorus Wedge Tomb
- Drumharsna Castle
- Dún Aonghasa – Ancient Stone Fort
- Dún Eochla (The Fort of Eochaill)
- Dún Eoghanachta (The Fort of Eoghanacht)
- Dunguaire Castle
- Dunmore Augustinian Friary
- Dunmore Castle
- Fiddaun Castle
- Headford Castle
- Inchagoill Island
- Ionad Cultúrtha an Phiarsaigh Conamara - Pearse’s Cottage and Visitor Centre
- Kilconnell Franciscan Friary
- Kilcornan Settlement
- Kilmacduagh Augustinian Friary
- Kilmacduagh Monastic Site
- Na Seacht dTeampaill (The Seven Churches)
- Oranmore Castle
- Pallas Castle
- Petersburg House
- Portumna Castle
- Portumna Castle and Gardens
- Portumna Dominican Friary
- Ross Errilly Franciscan Friary
- Ross Errilly Friary
- Strongfort Castle (Caheradangan Castle)
- Teaghlach Éinne (Éanna’s Household)
- Teampall Chiaráin (The Temple of St. Ciarán)
- Tuam High Cross
- Tullokyne Castle
Kerry
- Aghadoe Monastic Site & Parkavonear Castle
- Annagh Church
- Ardfert Cathedral
- Ardfert Franciscan Friary
- Ballinskelligs Augustinian Abbey
- Ballinskelligs Castle
- Ballintaggart Ogham Stones
- Ballymalis Castle
- Ballywiheen Monastic Site
- Caherdorgan North Cashel & The Chancellor’s House
- Cahergall Cashel
- Carrigafoyle Castle
- Cathair na gCat Ogham Stone – Ballywiheen
- Church Island – Valentia Harbour
- Cloghanecarhan Ringfort and Ogham Stone
- Darrynane Beg Ogham Stone
- Dún an Óir
- Dunbeg Fort
- Dunloe Ogham Stones
- Flesk Castle
- Gallarus Castle
- Illaunloughan Monastery
- Illauntanning Monastic Site
- Innisfallen Augustinian Abbey
- Keeler’s Stone
- Kilcoolaght East Ogham Stones
- Killelton Church
- Killiney Church
- Kilmalkedar Church
- Lislaughtin Franciscan Abbey
- Lissivigeen Stone Circle
- Listowel Castle
- Loher Ringfort
- McCarthy Mor Castle
- Muckross Franciscan Friary
- Ratass Church and Ogham Stone
- Rattoo Round Tower
- Rínn an Chaisleáin
- Sive Stone Fort
- Skellig Michael
- Staigue Stone Fort
- Tullygarran Ogham Stones
Kildare
- Castledermot Franciscan Friary
- Castledermot Round Tower
- Castledermot South Cross
- Castle Rag
- Clongowes Wood Castle
- Conolly Folly
- Dún Ailinne
- Hill of Allen
- Kilteel Castle
- Kilteel Romanesque Church
- Maynooth Castle
- Moone High Cross
- Naas Moat
- Old Kilcullen Monastery
- Oughterard Ecclesiastical Site
- Palmerstown Standing Stone
- Punchestown Longstone
- Rathcoffey Castle
- Taghadoe Round Tower and Church
- White’s Castle
Kilkenny
- Aghaviller Round Tower and Church
- Balief Castle
- Ballyboodan Ogham Stone
- Burnchurch Castle and Turret
- Callan Augustinian Friary
- Coolhill Castle
- Dunmore Cave
- Gowran Castle
- Grangefertagh Round Tower and Church
- Grannagh (Granny) Castle
- Inistioge Augustinian Priory
- Jerpoint Cistercian Abbey
- Kells Priory
- Kilfane Church
- Kilkenny Castle
- Kilkieran High Crosses
- Killamery High Cross
- Kilmacow Graveyard
- Kilmogue Portal Tomb
- Kilree Church, Round Tower and Cross
- Knockroe Passage Tomb
- Knocktopher Church
- Rathealy Ringfort
- Rothe House
- Sheepstown Church
- St. Francis Franciscan Abbey
- St. John’s Augustinian Priory
- St. Mary’s Church, Callan
- St. Mary’s Church Gowran
- The Black Abbey
- Thomastown Church
- Tullaherin Church
- Tullaherin Monastic Site
- Tullaroan Church
- Ullard Church
- Urlingford Castle
Laois
- Aghmacart Castle
- Ballyknockan Castle
- Ballyroan Castle
- Cullahill Castle
- Durrow Castle
- Errill Church and Wayside Cross
- Killeshin Church
- Maryborough Fort (Fort Protector)
- Oughaval Church
- Redcastle Ringfort
- Rock of Dunamase
- Shaen Castle
- Sleaty Church and High Crosses
- Timahoe Round Tower and Church
Leitrim
- Ballynaglough Standing Stones
- Corracloona Court Tomb
- Creevelea Franciscan Friary
- Fenagh Churches
- Parke’s Castle
- Rosclogher Castle
- Seán Mac Diarmada Cottage
Limerick
- Adare Castle
- Ardagh Ringfort
- Ardpatrick Round Tower
- Askeaton Castle
- Askeaton Franciscan Friary
- Ballyallinan Castle
- Ballylanders Ringfort
- Carrigogunnell Castle
- Castle Matrix
- Castle Oliver
- Clonkeen Church
- Collegiate Church of SS Peter and Paul
- Desmond Castle Newcastlewest
- Dromore Castle
- Dunnaman Castle
- Glebe Castle
- Glenduff Castle
- Grange Stone Circle
- Hospital Church
- Kilcolman Church
- Kilduff Castle
- Kilfinny Castle
- Killeen Cowpark Church
- Kilmallock Dominican Priory
- King John’s Castle
- Knockadoon – Lough Gur
- Knockainey Castle
- Lisnacullia Castle
- Lissamota Castle
- Lough Gur
- Merchant House, Kilmallock
- Monasteranenagh Cistercian Abbey
- Mortalstown Ringfort
- Mungret Churches
- Rathnaseer Castle
Longford
- Aghaward Ringfort
- Bully's Acre
- Corlea Iron Age Roadway
- Granard Motte and Bailey
- Larkfield Ringfort
- Sonnagh Ringfort
- St Mel’s Cathedral
Louth
- Aghnaskeagh Cairn and Portal Tomb
- Carlingford Castle (King John's Castle)
- Carlingford Dominican Friary
- Castleroche Castle
- Clochafarmore Standing Stone
- Dromiskin Church, High Cross, and Round Tower
- Monasterboice Monastic Site
- Old Mellifont Cistercian Abbey Monastic Site
- Proleek Dolmen
- Ravensdale Stone Circle
- Stephenstown House
- Taaffe's Castle
- Termonfeckin Tower House
- The Mint
- Tholsel
Mayo
- Aghagower Round Tower and Church
- Ashford Castle
- Balla Round Tower
- Burrishoole Dominican Priory
- Castlecarra Castle
- Céide Fields Neolithic Site
- Clare Island Castle
- Clare Island Cistercian Abbey
- Cong Augustinian Abbey and Monks Fishing House
- Kilcashel Stone Fort
- Kildavnet Castle
- Kinlough Abbey and Castle
- Moyne Franciscan Friary
- Murrisk Augustinian Abbey
- Rathfran Dominican Friary
- Rockfleet Castle
- Rosserk Franciscan Friary
- Rosturk Castle
- Strade Dominican Friary
- Turlough Round Tower and Church
Meath
- Athcarne Castle
- Athcarne White Cross
- Athlumney Castle
- Bective Cistercian Abbey
- Brú na Bóinne: Newgrange, Knowth and Dowth
- Carrickdexter Cross
- Causestown Castle
- Donaghmore Round Tower and Church
- Dunmoe Castle
- Hill of Tara
- Kells Monastic Site
- Lia Fáil (Stone of Destiny)
- Loughcrew Megalithic Cemetery
- Mound of the Hostages
- St James' Church of Ireland
- St. John’s Augustinian Priory – Newtown
- The Stone of Destiny
- Tlachtga (Hill of Ward)
- Trim Castle
Monaghan
- Clones Round Tower, Church and High Cross
- Drumsnat Graveyard
- Inishkeen Glebe Round Tower
- Mannan Castle
- Mullyash Kerbed Cairn
- Tullyglass Ringfort
Offaly
- Clonmacnoise Monastic Site
- Durrow Church and High Cross
- Kilcolgan Castle
- Kinnitty High Cross
- Lemanaghan Castle
- Rahan Churches
Roscommon
- Ballintober Castle
- Boyle Cistercian Abbey
- Emlagh High Cross
- Inchmacnerin Augustinian Priory
- McDermott’s Castle
- Rathcroghan Visitor Centre
- Roscommon Castle
- Roscommon Castle-South West Tower
- Roscommon Dominican Friary
- Trinity Abbey
Sligo
- Ballinafad Castle
- Ballincar Castle
- Ballymote Castle
- Carns Passage Tomb
- Carrowmore Megalithic Cemetery
- Creevykeel Court Tomb
- Drumcliff Round Tower and High Crosses
- Inishmurray Monastic Island
- Knocknarea – Queen Medb’s Tomb
- Lisheen na bPáistí
- Sligo Abbey
Tipperary
- Ahenny High Crosses
- Athassel Augustinian Priory
- Ballycomisk Ringfort
- Ballydavid Castle
- Ballymoreen Castle
- Ballynoran Church
- Blackcastle
- Cahir Augustinian Priory
- Cahir Castle
- Cahir Castle Cottage
- Carron Henge – Rathnadov
- Carron Ringfort
- Derrynaflan Monastic Site
- Donaghmore Church
- Famine Warhouse 1848
- Grallagh Castle
- Holycross Abbey
- Holycross Cistercian Abbey – Infirmary Building
- Hore Cistercian Abbey
- Kilcash Church
- Kilcooley Cistercian Abbey
- Killahara Castle
- Knockgraffon Motte and Bailey
- Liathmore Church
- Lorrha Augustinian Priory
- Lorrha Church and High Crosses
- Lorrha Dominican Priory
- Loughmoe Castle
- Monaincha Church
- Moor Franciscan Friary
- Nenagh Castle
- Nenagh Friary
- Ormond Castle
- Rahelty Castle
- Roscrea Castle, Gardens and Damer House/Black Mills
- Roscrea Franciscan Friary
- St Crónan’s Romanesque Church
- St. Dominick’s Dominican Priory
- Terryglass Castle
- The Main Guard
- The Rock of Cashel
- The Swiss Cottage
- Toureen Peakaun Church
Tyrone
Waterford
- Ardmore Cathedral
- Ardmore Round Tower
- Ballyduff Barracks
- Ballynamona Court Cairn
- Carey's Castle
- Dromana Gate
- Dungarvan Castle
- Dunhill Castle
- Greyfriars/French Church
- Harristown Passage Tomb
- Knockeen Portal Dolmen
- Knockmaun Castle
- McKenna’s Castle / Ardo House / Ardoginna House
- Reginald’s Tower
- St. Declan’s Monastery – Ardmore Monastic Site
- Strancally Tower
Westmeath
- Athlone Castle
- Bealin High Cross
- Clonyn Castle
- Delvin Castle
- Fore Abbey
- Hill of Uisneach
- Leper Hospital
- Mortimer’s Castle
- Taghmon – St. Munna’s Church
Wexford
- Ballyhack Castle
- Castleboro House
- Clone Church
- Clonmore Graveyard
- Coolhull Castle
- Dunbrody Cistercian Abbey
- Enniscorthy Castle
- Ferns Castle
- Ferns Church / Cathedral / Crosses / Abbey
- Fethard Castle
- Fethard Motte
- Grange Church
- Rathmacknee Castle
- Selskar Augustinian Priory
- Slade Castle
- Strongbow's Cap
- Strongbow's Entrenchment
- Strongbow's Tent
- Tacumshane Windmill
- Tintern Cistercian Abbey
- Vinegar Hill Windmill
Wicklow
- Aghowle Church
- Baltinglass Abbey
- Baltinglass Cistercian Abbey
- Black Castle
- Boleycarrigeen Ringfort and Ogham Stone
- Boleycarrigeen Stone Circle
- Broomfields Portal Tomb
- Castleruddery Stone Circle
- Crossoona Rath
- Donard Medieval Church
- Donard Motte
- Donard Ogham Stone
- Drummin Rock Art
- Dwyer McAllister Cottage
- Glendalough Round Tower
- Kiladreenan Church
- Killincarrig Castle
- Kindlestown Castle
- Raheen-a-Cluig Church
- Rathcoran
- Rathgall Ringfort
- Seefin Passage Tomb
- St. Crispin's Cell
- St Kevin's Church
- Whitefield Graveyard
- Wicklow Gaol