Ballykeel Dolmen

You'll find yourself standing in front of a 4,000-year-old stone monument that's remarkably well-preserved, considering it's been here since the Neolithic period. Ballykeel Dolmen is a proper megalithic tomb - basically a massive capstone balanced on upright stones - and it sits in open countryside just outside Newry. The thing that strikes you first is the sheer scale of the stonework. These blocks didn't get here by accident, and the fact that they're still standing speaks volumes about how the Bronze Age builders knew what they were doing.

The site itself is free to visit and accessible year-round, which is brilliant. You're not looking at a visitor centre or guided tours here - this is archaeology in its rawest form. Allow thirty minutes to an hour, depending on how much time you spend pondering the people who built it. Kids will find it interesting enough, though they'll probably get restless after the initial "wow, that's old" moment. History buffs will appreciate the scale and the mystery of it all.

It works well as part of a broader day exploring the Mourne area. If you're staying at Hilltop Hideaway - a proper luxurious retreat with hot tubs just 2.4 miles away - you can knock this off in the morning before settling in for some serious relaxation. The site's off the beaten track enough that you won't be fighting crowds, but close enough to Newry that you're not stranded in the middle of nowhere. The landscape around it is lovely, rolling and green. Worth the detour if you're interested in ancient Ireland, less essential if standing stones don't do much for you.