Somerton Castle

You'll find the ruins of Somerton Castle scattered across fields just outside Lincoln, a Norman stronghold that's been crumbling for centuries. What's left isn't exactly Instagram-ready - we're talking earthworks, scattered stone fragments, and the sort of site that rewards a bit of imagination. The castle was built in the 12th century and its motte-and-bailey layout is still readable if you know what you're looking at, though most visitors won't find much standing architecture to photograph.

History buffs will get more from this than casual day-trippers. You need to understand Norman fortification design to feel anything, honestly. It's the kind of place where kids aged eight and up might be intrigued by the fort-building aspect, but younger ones will lose interest within twenty minutes. There's no visitor centre, no interpretation boards, just the landscape itself.

It's free to visit and you can walk the site in about an hour, though you could spend longer if you're into archaeology. The nearest proper facilities are in Lincoln itself, just a few miles north. If you're staying at Spire View Meadow glamping site - which sits about four miles away - this could make a reasonable afternoon outing between exploring Lincoln's cathedral and the surrounding parks. Check access beforehand though, as it's not formally managed as an attraction and can be boggy after rain.