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)

Ring Fort

Caher Comaun (Clare)
Cahergall (Kerry)
Cahermacnaghten (Clare)
Cahervagliair (Cork)
Carraig Aile 1 (Limerick)
Carraig Aile 2 (Limerick)
Carrowmore Ring Fort (Sligo)
Clogher (Sligo)
Cruachain - Rath Cruachan Mound (Roscommon)
Cruachain - Rathmore (Roscommon)
Danesfort (Meath)
Drumena (Down)
Grianán of Aileach (Donegal)
Hill of Tara (Meath)
Kilcashel (Mayo)
Knockdrum (Cork)
Leacanabuaile (Kerry)
Loher (Kerry)
Magh Adhair (Clare)
Moneygashel (Cavan)
Rathgall (Wicklow)
Staigue (Kerry)
Tullyskeherny (Leitrim)