Howth Summit (171m) has excellent views across Dublin Bay right down to County Wicklow. From the top of Howth hill you can walk to the top of the Ben of Howth, a headland near the village, which has a cairn said to mark a 2000-year-old Celtic royal grave. The 1814 Baily Lighthouse, at the southeastern corner, is on the site of an old stone fort and can be reached by a dramatic clifftop walk.
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