The history of Ireland can  be best seen  in its Walled Towns. There are some of the  walled towns and villages throughout Ireland that are worth a visit. Ardee, Athenry, Athlone, Bandon,  Cashel, Clonmel, Cork, Drogheda, Dublin, Fethard, Galway, Kilkenny, Limerick, New Ross,  Trim, Waterford, Wexford and Youghal. The Viking raiders of the ninth century