Grianán of Aileach Carrowreagh, Inishowen, Co. Donegal +353 (0) 749362600 http://www.megalithicireland.com/Grianan%20of%20Aileach.html Co. Donegal
Roscommon Castle Castle Ln, Cloonbrackna, Co. Roscommon https://www.visitroscommon.ie/roscommon-castle Co. Roscommon
Nenagh Castle O'Rahilly, O'Rahilly St, Nenagh, Co. Tipperary, Ireland +353 (0) 6733850 https://www.nenagh.ie/places-of-interest/details/nenagh-castle Co. Tipperary
Monasterboice High Cross and Round Tower Monasterboice, Co. Louth +353 (0) 419 872 843 https://www.visitlouth.ie/explore-and-do/explore-louth/sacred-sites-louth/monasterboice-high-cross-and-round-tower.html Co. Louth
Leap Castle Leap Castle, Ireland, R421, Leap, Roscrea, Co. Offaly, Ireland +353 (0) 86 869 0547 http://leapcastle.net Co. Offaly