Thirsk Castle

The earthworks that mark Thirsk Castle sit quietly on the edge of North Yorkshire's market town, easy to miss if you're not paying attention. What remains are the motte-and-bailey foundations - basically a raised mound where the keep once stood, surrounded by the ditches that once held water as a defensive moat. It's not Caernarfon or Warwick; there's no soaring stonework or battlements to photograph. What you get instead is the chance to stand where Norman lords surveyed their lands, to walk the circuit of the bailey and understand how these early medieval fortifications actually worked.

This spot appeals most to history types and families with older kids who enjoy a bit of archaeological detective work. Younger children might find it underwhelming - there's no visitor centre, no interpretation boards to speak of, and the earthworks require some imagination to bring to life. Plan 30 to 45 minutes if you're thorough; less if you're just passing through Thirsk itself.

The real value here is as part of a broader North Yorkshire exploration. Thirsk town centre is worth a proper wander - proper Georgian architecture and decent pubs - and the castle ruins slot neatly into a morning before heading to Woodland Lakes Lodges (2.6 miles away) or Hillside Caravan Park (4.6 miles) for the evening. It's the sort of place that rewards curiosity rather than demanding it. Free to visit, naturally, with no formal opening hours to worry about. Go when the light's good and the town's not rammed with visitors.