Ballymoon Castle is a National Monument situated 2 miles east of Muine Bheag, County Carlow, Ireland. The castle is thought to date from the 13th century.
Wikipedia https://en.wikipedia.org/wiki/Ballymoon_Castle
Info http://irishhistorypodcast.ie/ballymoon-castle-this-didnt-end-well/
Address Ballywilliamroe, Co. Carlow, Ireland
Coordinates 52°42'0.78" N -6°54'24.104" E