Coed-y-Gaer Hillfort

The Iron Age ramparts at Coed-y-Gaer sit on a ridge above Crickhowell, and climbing up here genuinely rewards you with views that justify the effort. It's a proper archaeological site - multiple defensive banks and ditches that speak to someone taking their hilltop fortress seriously around 2,000 years ago. The site itself is open access, no gates, no admission fees, just a walk through woodland that gets steeper as you go.

Once you're at the top, the layout becomes clear: concentric earthworks forming a fortress that would have been formidable in its day. Today it's peaceful, a bit overgrown in places, with wind through the trees and the valley laid out below. Allow about 90 minutes return from Crickhowell itself - it's not a casual stroll, but it's the kind of walk that history enthusiasts actually care about, rather than just another viewpoint.

This works brilliantly if you're based at Cwmdu Campsite just down the road, or further out at Pencelli Castle. Either way, you can string together a proper morning - hillfort, then drop into Crickhowell for lunch and a wander around the high street. Kids aged 10+ will find it genuinely interesting if they're the exploring type; younger ones might find the climb tedious. Early morning visits are quieter, and the light through the trees is better for photographs.