Ardinamir, dun site

The walk up to Ardinamir takes you through proper Scottish moorland just outside Oban - it's not a stroll, but the climb rewards you with a genuine Iron Age dun, the ruins of a stone-built fortress that would have dominated this landscape two thousand years ago. What you're looking at are the remains of thick defensive walls, some still standing to a decent height, which once enclosed a small settlement. The views across Argyll while you're up there are genuinely excellent, particularly towards the coast.

It's the kind of place that appeals to history types and serious walkers rather than casual visitors. You'll need proper boots and shouldn't attempt it in poor visibility - the ground is rough and the paths aren't maintained. Allow a solid hour each way, maybe longer if you're taking photographs or spending time reading the landscape.

Free to visit, and there's no visitor infrastructure - bring water. The nearest towns is Oban, which sits just 1.2 miles away, making this a straightforward afternoon excursion if you're based at one of the local parks. Sunnybrae Holiday Park and Argyll Kayaker Cove are both within spitting distance, so you could easily combine a morning paddle or beach time with an afternoon hike.

Truth is, Ardinamir won't hold your attention for hours unless you're genuinely into Iron Age archaeology. But the walk itself is proper good, and standing among those ancient stones with Argyll spread out below you - that's worth the effort.