Gelston Castle

You'll find Gelston Castle a few miles outside Castle Douglas, standing on the banks of the River Dee like something from a proper Scottish postcard. It's a 15th-century tower house, the sort of place that whispers stories rather than shouts them - exactly what draws history buffs to these parts of Dumfries and Galloway.

What you're looking at is a solid, four-storey fortress built when the Border lands were genuinely dangerous. The castle's design is functional rather than showy: thick stone walls, narrow windows, everything you need to survive a raid. You can walk around the exterior, and on a clear day the views across the Dee valley are worth the trip alone, though the interiors aren't always accessible to the public, so check ahead before making the journey.

This works best for serious history types and keen photographers rather than families after a day of activities. It's the sort of stop you'd fit in between other attractions - twenty minutes of wandering about, some photographs, then onwards. The castle sits well within a wider circuit of the region if you're staying at one of the caravan parks nearby - Kippford View, Mollance Farm, or Castle Point are all within striking distance.

The real appeal here is that it's quiet and largely undiscovered. You won't queue, you won't see crowds, and you'll get a genuine sense of what these Border fortresses meant. Just make sure you've got reasonable weather on the day you visit - standing in Scottish drizzle staring at grey stone loses its charm rather quickly.