The cursed lake at the top of Slieve Gullion, swim in it and your hair turns white. I didn't bother because getting there anyway.
Outer and inner walls with what would have been a 30 meter tall round tower. Defensive to protect the Monks from Vikings.
Didn't help. Last record of the place was of the burning of the Abbot.
Web working dad.
The North part of Ireland.
Walk on air against your better judgement.
Seamus Heaney