Ross Castle (Irish: Caisleán an Rois) is a 15th-century tower house and keep built, it is thought, by Irish chieftain O’Donoghue Mór in the 15th century. It is located on the edge of Lough Leane (Irish Loch Léin) in Killarney National Park, County Kerry, Ireland (Irish: Irish: Páirc Náisiúnta Chill Airne, Contae Chiarraí, Éire). Ross Castle can be reached via a signposted right turn off the N71 road travelling south about two miles from the town of Killarney (Irish:Cill Airne).