Ya that’s fair enough I suppose. I assume they had those in other countries too?
Edit:
Ireland’s only unique contribution to world architecture, the free-standing round tower, survives at some 65 sites with examples in all but four of the 32 counties of this island.
You’d really have to rack your brains to think of a unique structure or one that stands out. I know you have the old O2 Arena now, maybe Titanic museum Belfast. I think the quintessentially Irish ones though are at Newgrange visitor centre, maybe the Ceide Fields one and the one at the Burren possibly fit the bill as well. Glucksman in UCC visually impressive as well.