Maes-y-Castell

The Iron Age fort at Maes-y-Castell sits on a hilltop outside Rhydarwen, commanding views across Carmarthenshire that must have been proper strategic. You're looking at defensive ramparts and ditches that are still clearly visible after two thousand years - the sort of site where you can actually picture the layout without much squinting at interpretation boards.

It's a walker's destination more than anything. The approach involves a decent climb, but once you're up there the landscape opens out across the valleys. The fort itself isn't dramatically reconstructed or anything - you get the bones of it, the earthworks, the sense of the place. That appeals to archaeology types and anyone interested in how Iron Age communities defended themselves, but families with young kids might find it a bit of a trudge for what's essentially bumps in a field.

There's no visitor centre or facilities to speak of, and I couldn't find opening hours or admission details listed anywhere - which suggests it's open access, likely free. You'll want to allow an hour including the walk up and time to explore properly. Wear decent boots; it gets muddy.

Glynmarch Farm Camping is only five and a half miles away, making this a solid half-day outing if you're based there. Pair it with other local history walks or use it as a breather between longer park activities. The views alone justify the effort, even if the archaeology takes a backseat to the walk itself.