Lower Mill Estate, The Cotswolds

The Mill itself is the star here - a proper restored water mill that actually works, sitting beside the River Coln just outside Cirencester. You can watch the great wheel turn on the right days, which beats staring at a static display any time. The estate sprawls across decent grounds with walking paths along the river, and there's something quietly satisfying about a place that still does what it was built to do three centuries ago.

It's the kind of spot that appeals to anyone with a soft spot for industrial heritage, though families with younger kids might find an hour enough unless they're the type to sketch every brick. History enthusiasts will want to stay longer, poking around the mill building itself and the surrounding structures. The riverside walks are genuinely lovely - flat, easy underfoot, proper for a gentle afternoon.

Being free admission (which appears to be the case, though worth checking ahead) makes it a sensible stop when you're based at Hoburne Cotswold Holiday Park, just 2.2 miles away, or any of the local campsites. Pair it with a walk into Cirencester itself - the town's only a short drive - and you've got a solid half-day sorted. Best visited when the water's flowing properly, so avoid drought years if you can. Rain doesn't hurt either. The riverside setting means you'll want to allow a proper couple of hours if you're walking the full length of the paths, but a quick look at the mill alone takes 30 minutes.