Cnoc Grianail, dun site

You'll need proper hillwalking shoes and a decent chunk of time to reach this Iron Age fort on the Isle of Islay. Cnoc Grianail sits high on a windswept ridge, and the walk in isn't a casual stroll - it's steep in places and the path can be boggy depending on when you visit. Once you're up there, though, the effort pays off. What remains is the defensive earthwork of an ancient dun, with views across Islay that stretch for miles on a clear day.

This is archaeology in the raw. There's no interpretation board, no café, no gift shop. Just the bones of a settlement that would have housed a Pictish or Celtic community 1,500 years ago. History enthusiasts and serious walkers will find it genuinely rewarding; families with small children might find the trek frustrating for what amounts to some grassy lumps and ditches, however ancient. Allow three to four hours for the full outing including the hike itself.

Islay isn't exactly short on Bronze and Iron Age sites, but Cnoc Grianail rewards the effort more than most. The island's archaeological richness makes it worth visiting while staying at somewhere like Islay Glamping Pods, which gives you a comfortable base to explore this quieter corner of Argyll. Admission is free - you're just walking onto open land. Go in spring or summer when the ground's drier and the light holds longer in the evenings.