NM# Monument name Description Image Townland Location 310 Baldongan Church Church & Tower Baldongan 53°33′11″N 6°07′44″W / 53.55316°N 6.128776°W / 53.55316; -6.128776 (Baldongan Church and Tower ) 437 Ballyedmonduff Wedge Tomb Wedge Tomb Ballyedmonduff 53°13′45″N 6°13′34″W / 53.229167°N 6.2262°W / 53.229167; -6.2262 590 Balrothery Tower Church Tower Balrothery 53°35′12″N 6°11′24″W / 53.586546°N 6.190072°W / 53.586546; -6.190072 (Balrothery Tower ) 291 Brennanstown Portal Tomb Portal Tomb Brennanstown 53°15′14″N 6°09′32″W / 53.253794°N 6.158762°W / 53.253794; -6.158762 32 Clondalkin Round Tower Round Tower & Cross Clondalkin 53°19′19″N 6°23′43″W / 53.322065°N 6.395374°W / 53.322065; -6.395374 (Clondalkin Tower ) 285 Tully's Castle Castle Clondalkin 53°19′15″N 6°23′24″W / 53.320812°N 6.389957°W / 53.320812; -6.389957 (Tully's Castle ) 444 Archbold's Castle Castle Dalkey 53°16′40″N 6°06′23″W / 53.27789°N 6.106422°W / 53.27789; -6.106422 (Archbold's Castle ) 33 Dalkey Island Church Church Dalkey Island 53°16′22″N 6°05′08″W / 53.272685°N 6.085509°W / 53.272685; -6.085509 (Dalkey Island Church ) 401 St. Mary's Abbey Abbey (Cistercian) (Chapter house) Northside Dublin 53°20′51″N 6°16′09″W / 53.3475°N 6.269167°W / 53.3475; -6.269167 (St. Mary's Abbey ) 34 St. Audoen's Church Church Southside Dublin 53°20′37″N 6°16′27″W / 53.34374°N 6.27417°W / 53.34374; -6.27417 (St. Audoen's Church ) St. Stephen's Green Park Southside Dublin 53°20′17″N 6°15′33″W / 53.338056°N 6.259167°W / 53.338056; -6.259167 (St. Stephen's Green ) 230 Dunsoghly Castle Castle Dunsoghly 53°25′37″N 6°19′06″W / 53.426936°N 6.318277°W / 53.426936; -6.318277 (Dunsoghly Castle ) 276 Glencullen Standing Stone Standing Stone Glencullen 53°13′11″N 6°13′03″W / 53.219771°N 6.217385°W / 53.219771; -6.217385 (Glencullen Standing Stone ) 605 Grange Abbey Church Donaghmede 53°23′57″N 6°09′38″W / 53.399075°N 6.160429°W / 53.399075; -6.160429 (Grange Abbey ) 36 Howth Church Church Howth 53°23′15″N 6°03′57″W / 53.387515°N 6.065961°W / 53.387515; -6.065961 (Howth Church ) 226 Kilgobbin Cross Cross Kilgobbin 53°15′23″N 6°13′04″W / 53.256478°N 6.217806°W / 53.256478; -6.217806 (Kilgobbin High Cross ) 207, 587 Kill of the Grange Church, Well & Bullaun Stone Kill of the Grange 53°16′53″N 6°09′40″W / 53.281378°N 6.160987°W / 53.281378; -6.160987 (Kill of the Grange Church, Well and Bullaun Stone ) 35 Cill Iníon Léinín Church Killiney 53°15′17″N 6°06′59″W / 53.254727°N 6.116315°W / 53.254727; -6.116315 (Killiney Church ) 675 Kilmainham Gaol Prison Kilmainham 53°20′31″N 6°18′35″W / 53.341944°N 6.309722°W / 53.341944; -6.309722 (Kilmainham Gaol ) 493 Kilmashogue Wedge Tomb Rathfarnham 53°15′28″N 6°16′32″W / 53.2576987°N 6.2755741°W / 53.2576987; -6.2755741 (Kilmashogue ) 343 Kiltiernan Tomb Portal Tomb Kiltiernan 53°14′20″N 6°12′26″W / 53.2388225°N 6.2071451°W / 53.2388225; -6.2071451 (Kiltiernan Portal Tomb ) 216 Laughanstown Crosses and wedge tomb Laughanstown 53°14′32″N 6°09′06″W / 53.242275°N 6.151569°W / 53.242275; -6.151569 (Laughanstown crosses and wedge tomb ) 225 Tully Church Church Laughanstown 53°14′49″N 6°09′08″W / 53.246818°N 6.152242°W / 53.246818; -6.152242 157 Lusk Round Tower & Church Tower Lusk 53°31′34″N 6°10′02″W / 53.526116°N 6.167295°W / 53.526116; -6.167295 (Lusk Round Tower and Church Tower ) 302 Casino at Marino Demesne Building Marino 53°22′16″N 6°13′37″W / 53.37124°N 6.22703°W / 53.37124; -6.22703 (Casino at Marino ) 494 Monkstown Castle Castle Monkstown 53°17′20″N 6°09′02″W / 53.288911°N 6.15065°W / 53.288911; -6.15065 (Monkstown Castle ) 628 Rathfarnham Castle Castle or Fortified House Rathfarnham 53°17′53″N 6°17′01″W / 53.298099°N 6.283609°W / 53.298099; -6.283609 (Rathfarnham Castle ) 162 Rathmichael Early Medieval Ecclesiastical Site Rathmichael 53°13′58″N 6°08′46″W / 53.23288°N 6.14600°W / 53.23288; -6.14600 (Rathmichael ) 340 Swords Castle Castle Swords 53°27′35″N 6°13′12″W / 53.45980°N 6.22004°W / 53.45980; -6.22004 (Swords Castle ) 464 Tibradden Cairn Rathfarnham 53°14′19″N 6°16′49″W / 53.23862°N 6.28031°W / 53.23862; -6.28031 (Tibradden )