Nith Bridge Cross

You'll find this 14th-century stone cross standing in the centre of Thornhill, a modest market town in Dumfries & Galloway that doesn't announce itself loudly but rewards a proper look around. The Nith Bridge Cross is what remains of a medieval wayside monument - a stubby, weathered thing that's seen centuries pass without much fuss. It marks an old crossing point and speaks to the area's medieval importance, back when routes mattered and stone crosses guided travellers.

History types and anyone interested in how places evolved will find it worth a five-minute stop. It's free to visit, obviously, since it's just standing there in the street. The real value isn't in spending hours here - it's that it slots neatly into a wander through Thornhill itself, which has a decent high street and genuine small-town character that many places have lost. Families won't be gripped for long, but children often find old stones oddly compelling.

If you're staying at Penpont Holiday Park just down the road, or basing yourself at Red Squirrel Campsite or The Outdoor Hotel further afield, Thornhill makes an easy detour. The surrounding countryside is cracking for walks and the town itself has enough character to justify an afternoon. The cross works best as part of a broader exploration of the Lowlands rather than a destination in itself - but that's rather the point of these small historic monuments. They're signposts to understanding how Scotland was shaped.