Castell Felin-Ganol

Walk through overgrown ramparts and you're standing in what was once a proper Iron Age hillfort. Castell Felin-Ganol sits near Cardigan in Pembrokeshire, commanding views across the Teifi Valley - the kind of spot ancient Britons would have chosen to keep watch. The earthworks are substantial enough that you can trace the original defensive ditches without much squinting, though the stones themselves have mostly gone.

This is archaeology without barriers or admission fees. You turn up, wander round, and let your imagination do the heavy lifting. There's no visitor centre, no interpretation boards spelling everything out. That appeals to some people enormously - history buffs and walkers who like to piece things together themselves. Children might find it underwhelming unless they're genuinely into forts and Iron Age life; after twenty minutes, most will be ready to move on.

The approach involves a bit of scrambling through rough ground and overgrown sections. Decent boots matter more than distance - it's not a long trudge, but it's uneven and can be muddy. Spring and early summer give you the best views before vegetation gets too thick.

If you're based at Llwyngwair Manor Holiday Park down the road, this makes a solid morning detour on a walking day. Pair it with the Teifi Valley walks or a mooch round Cardigan itself. Worth the effort if archaeology genuinely interests you; less so if you need waymarked trails and facilities.