Millhill

The Iron Age fort at Millhill sits on a ridge above Crieff, commanding views across Perthshire that would have made it a proper strategic choice for ancient settlers. What you're looking at is an oval earthwork - a series of ditches and banks forming the defensive structure of a hillfort that's been quietly eroding into the landscape for nearly 2,500 years.

There's not much interpretation on site, which means you'll need to use your imagination a bit. Walk the perimeter and you can trace where the ramparts would have stood, though the fortifications aren't dramatic - this isn't Hadrian's Wall. The real draw is the position itself. From up here you understand why Bronze Age and Iron Age communities picked hillforts: sightlines to spot trouble coming, defensibility, and probably decent grazing land below.

Archaeology enthusiasts will get more from this than casual visitors. Families might find it a bit underwhelming if they're expecting something with signage and facilities - it's essentially a field with bumps. Allow an hour, maybe ninety minutes if you're thorough and the weather's decent. There's decent walking country around the area, so pair it with a ramble through the glens.

If you're staying at Craighead Howf, just 3.8 miles away, Millhill makes an easy half-day excursion. It's free to visit and accessible year-round, though winter can leave the site muddy and the views obscured. Spring and early autumn are your best bets.