Gaer-Ilwyd Dolmen

A short walk from Chepstow takes you to this modest Neolithic burial chamber, sat in fields above the Wye Valley. Two massive upright stones support a capstone, and that's essentially it - but there's something rather arresting about standing next to something built five thousand years ago. You can reach it on foot from the town centre in about twenty minutes, heading north into farmland until you spot the stone arrangement.

It's free to visit and open whenever you fancy - there's no gatehouse or reception, just the dolmen standing quietly in the landscape. Allow half an hour if you're making a special trip; longer if you're combining it with a walk. History enthusiasts will find it genuinely moving; families with young children might find twenty minutes is enough before the restlessness sets in. The views back towards Chepstow are decent enough to make the walk worthwhile even if you're not especially bothered about Neolithic monuments.

If you're staying at Penhein Glamping nearby, it's an easy morning outing before breakfast. The site sits within easy reach of the Wye Valley's walking trails, so it slots well into a broader day exploring the area. Don't expect something polished or visitor-friendly - it's just old stones in a field, with no interpretation or facilities. That's precisely why it works.