Pre-Christian

Barrow (3)
Boulder Burial (7)
Bullaun Stone (7)
Cairn (14)
Chambered Cairn (5)
Cist (1)
Court Tomb (39)
Cult Stone (2)
Henge
Kist (3)
Linkardstown Burial (2)
Passage Tomb (57)
Petroglyph (7)
Portal Tomb (59)
Prehistoric Settlement (5)
Promontory Fort (2)
Standing Stone (92)
Stone Circle (43)
Stone Row (28)
Wedge Tomb (49)

Early Christian and Medieval

Castle (172)
Church (376)
Clochán (3)
Cross (87)
Cross Pillar (16)
Cross Slab (34)
Decorative Slab (5)
Enclosure (1)
Grave Slab (27)
High Cross (40)
Hill Fort (3)
Holy Well (118)
Leacht (3)
Leacht Cuimhne (6)
Medieval Settlement (3)
Monastic Settlement (19)
Motte-and-Bailey (13)
Ogham Stone (26)
Oratory (12)
Ring Fort (23)
Round Tower (42)
Sheela-na-Gig (30)
Souterrain (1)
Stone Figure (6)
Tau Cross (5)
Town Wall and Gate (34)

Miscellaneous

Mythological Site (5)
Natural Place (6)
Sweat House (3)
Weird Thing (34)

Castle

Annacarty (Tipperary)
Annaghkeen (Galway)
Ardee (Louth)
Ardfinnan (Tipperary)
Athlumney (Meath)
Audley's (Down)
Aughnanure (Galway)
Balfour (Fermanagh)
Ballingarry (Limerick)
Ballintober (Roscommon)
Ballyadams (Laois)
Ballybunion (Kerry)
Ballycarbery (Kerry)
Ballygrennan (Limerick)
Ballyhack (Wexford)
Ballyhealy (Wexford)
Ballylahan (Mayo)
Ballyloughan (Carlow)
Ballymaquiff (Galway)
Ballymoon (Carlow)
Ballymote (Sligo)
Ballyportry (Clare)
Ballyragget (Kilkenny)
Barberstown (Kildare)
Barnacoghil (Sligo)
Barnaderg (Galway)
Barrett (Cork)
Barryscourt (Cork)
Belvelly (Cork)
Bishop's Palace (Donegal)
Black Castle (Wicklow)
Blundell (Offaly)
Bridge Castle (Tipperary)
Bruree (Limerick)
Bulloch (Dublin)
Burnchurch (Kilkenny)
Buttevant (Cork)
Cahir (Tipperary)
Carbury (Kildare)
Carlow (Carlow)
Carnew (Wicklow)
Carra (Antrim)
Carra (Mayo)
Carrick (Kildare)
Carrigadrohid (Cork)
Carrigafoyle (Kerry)
Carriganass (Cork)
Carrigogunnell (Limerick)
Castle Matrix (Limerick)
Castle of Doon (Galway)
Castle Roche (Louth)
Castlederg (Tyrone)
Castlejordan (Meath)
Castlemagner (Cork)
Clara (Kilkenny)
Clonmacnoise Castle (Offaly)
Clonmore (Carlow)
Clonony (Offaly)
Conna (Cork)
Coolhull (Wexford)
Corluddy (Kilkenny)
Court Castle (Tipperary)
Craggaunowen (Clare)
Cullen (Waterford)
Cusackstown (Meath)
Dalkey (Archibold's) (Dublin)
Desmond (Limerick)
Doe (Donegal)
Donore (Meath)
Doonbeg (Clare)
Dromore (O'Brien's) (Clare)
Drumharsna (Galway)
Dublin Castle - Record Tower (Dublin)
Dundrum (Down)
Dungarvan (Waterford)
Dunguaire (Galway)
Dunhill (Waterford)
Dunluce (Antrim)
Dunmahon (Louth)
Dunmoe (Meath)
Dunmore (Galway)
Dunmore East (Waterford)
Dunsoghly (Dublin)
Easky (Sligo)
Edmond's Castle (Tipperary)
Enniscorthy (Wexford)
Enniskillen (Fermanagh)
Ferns (Wexford)
Fethard-on-Sea (Wexford)
Field (Sligo)
Garbally (Galway)
Glenogra (Limerick)
Glenquin (Limerick)
Glin (Limerick)
Golden (Tipperary)
Gowran (Kilkenny)
Grannagh (Kilkenny)
Grennan (Kilkenny)
Harry Avery's (Tyrone)
Haynestown (Louth)
Howth (Dublin)
Kanturk (Cork)
Kilbolan (Limerick)
Kilcash (Tipperary)
Killiane (Wexford)
Kilteel (Kildare)
King John's (Limerick)
King John's (Louth)
Kit's (Donegal)
Knocklong (Limerick)
Lea (Laois)
Leamanagh (Clare)
Leighlinbridge (Carlow)
Liscarroll (Cork)
Lisronagh (Tipperary)
Listowel (Kerry)
Lohort (Cork)
Lombard's (Cork)
Mallow (Cork)
Manorhamilton (Leitrim)
Maynooth (Kildare)
McCarthy's (Kerry)
McSwyne (Donegal)
Menlough (Galway)
Minard (Kerry)
Monea (Fermanagh)
Moorstown (Tipperary)
Mountcashel (Clare)
Moygara (Sligo)
Moymlough (Sligo)
Moyne (Mayo)
Moyry (Armagh)
Nenagh (Tipperary)
Newtownstewart (Tyrone)
Northburg (Donegal)
Nugent (Westmeath)
O'Doherty's Keep (Donegal)
O'Grady (Clare)
Oranmore (Galway)
Ormonde (Tipperary)
Parkanovear (Kerry)
Portaferry (Down)
Puck's (Dublin)
Rathmacknee (Wexford)
Rock of Dunamase (Laois)
Rockfleet (Mayo)
Roodstown (Louth)
Roscommon (Roscommon)
Roscrea (Tipperary)
Ross (Kerry)
Shanmuckinish (Clare)
Shrule (Mayo)
Shrule (Laois)
Slade (Wexford)
Strangford (Down)
Swords (Dublin)
Taaffe's (Louth)
Taghmon (Wexford)
Tellarought (Wexford)
Termonfeckin (Louth)
The Black Castle (Tipperary)
The Mint (Louth)
Thomastown (Kilkenny)
Thoor Ballylee (Galway)
Threecastles (Wicklow)
Tinnahinch (Carlow)
Trim (Meath)
Twomilesborris (Tipperary)
Tynte's (Cork)
Wall (Wexford)
White's Castle (Kildare)
Woodstock (Kildare)