Doonagore Castle between the village of Doolin and the Cliffs of Moher on the County Clare coast, County Clare, Munster, Republic of Ireland, Europe

Christian ruins from 10th to 12th centuries, round tower of monastic gatehouse, Glendalough, Wicklow Mountains, County Wicklow, Leinster, Republic of Ireland (Eire), Europe

Monastic gateway, round tower dating from 10th to 12th centuries, Glendalough, Wicklow Mountains, County Wicklow, Leinster, Eire (Republic of Ireland), Europe

Ruins of Kilmacduagh Monastery with round tower, County Galway, Connacht, Republic of Ireland, Europe

Medieval castle and church ruins of St. Patricks Cathedral, fully preserved round tower, ornate high cross, Rock of Cashel, County Tipperary, Ireland, Europe

Round tower, former monastery, Clonmacnoise, County Offaly, Ireland, Europe

Ulster History Park, Omagh, County Tyrone, Ireland

Rock Of Cashel, Cashel, County Tipperary, Ireland

Devenish Monastic Site, Devenish Island, Lower Lough Erne, County Fermanagh, Ireland

Kilmacduagh Monastery, Kilmacduagh, County Galway, Ireland

Round Tower At Turlough, Co Mayo, Ireland

Ireland, County Offaly, Clonmacnoise Monastic Settlement, South Cross and Round Tower with River Shannon in the background.

Ireland, County Mayo, Meelick Round Tower.

Ireland, County Clare, Doolin, Doonagore Castle is a round 16th century tower house 1 km above Doolin village