Invereddrie

You'll find yourself standing among the earthworks of what was once an Iron Age fort, just outside Blairgowrie in Perthshire. Invereddrie doesn't announce itself loudly - there's no visitor centre, no gift shop, no car park with a café. What you get instead is the real thing: grass-covered ramparts and ditches that still define the landscape after two thousand years.

The site consists of a univallate hill fort, meaning a single line of defensive fortifications encircling the summit. Walk the perimeter and you'll trace the defensive ditch clearly enough, though the fort itself was built and abandoned long before the Romans showed up. It's the kind of place that appeals to archaeology enthusiasts and serious walkers who want their history without the crowds - not somewhere you'd drag reluctant teenagers for an afternoon.

Allow an hour if you're properly exploring it, less if you're just passing through. There's no admission fee because there's nothing to charge at - just turn up and walk the earthworks. Spring and early summer are best, when the grass is manageable and you can actually see the ditch lines properly without getting soaked.

If you're staying at Glenshee Glamping nearby, it's a proper bite-sized detour that fills a morning walk. Combine it with the broader walking country around Blairgowrie and you've got something worthwhile. But go expecting solitude and Iron Age archaeology, not interpretation boards or facilities.