Camp

There's a reason archaeologists still get excited about Camp, just outside Newport in Pembrokeshire. It's an Iron Age hillfort, and what makes it genuinely interesting is how intact the defensive earthworks remain - you can actually walk the perimeter and trace where ancient people chose to dig in their heels, quite literally. The double and triple ramparts are properly impressive when you're standing among them, giving you a real sense of why someone picked this spot to defend against Bronze Age raiders.

The views across the Preseli Hills and down towards the coast justify the walk alone. History buffs will spend a good hour picking apart the settlement layout, working out where buildings might have stood. Families with younger kids might find it less gripping than, say, Tintern Abbey - there's no dramatic stone structure, just earthworks and views. Allow an hour if you're keen, half that if you're just passing through.

It's free and accessible, though there's no formal visitor facility. Bring decent boots because it gets boggy. If you're camped at The Hide or Trewrach - both seriously excellent - Camp makes a bracing morning walk before heading down to the coast. It slots well into a broader Pembrokeshire itinerary because you can combine it with Newport's shops and the nearby Preseli bluestone trails without doubling back. Go when it's dry, and don't expect crowds.