Even on a tight schedule, Dalkey & Killiney Hill earns the hours.
Allow Half day (3–4 hours).
A charming heritage village with cafés, a tiny castle, and a short climb up Killiney Hill rewarded by a bay view often likened to the Bay of Naples. The honest catch: it's pleasant rather than dramatic, the celebrity-spotting angle is overblown, and there's no single must-see — it's about the genteel coastal mood.