Cave in Rathurlisk

Explorer Tom Fairy fort or earthen ringfort in Lugdoon is basically just a muddy donut that thinks it's a fortress. There’s a scruffy dog patrolling the rim who clearly believes he’s the CEO of this entire hillside. Tell the kids it’s a castle, close enough.

Explorer Tom Cross in Ballygreighan is lying flat on the ground next to a holy well, acting like it's taking a long lunch break from its duties. Its secret talent is making nearby sheep look particularly smug and superior about their own spiritual journeys. Have a wander and a wonder.

Explorer Tom Castle in Cashelboy is a limestone tower house that gave up chocolate for Lent but kept its stubborn refusal to collapse into the pasture. It’s got two storeys and a vaulted ground floor, which sounds expensive for something sitting next to a church. Stop the car, it's worth the hazard lights.

Explorer Tom Donagh in County Sligo would bring a bag of chips and a very aggressive opinion about football to any party it attended, ruining the atmosphere instantly. It’s a headland with the confidence of a man who knows he owns the place but hasn’t checked the deed yet. Go in good boots and better humour.

Explorer Tom Site of Dunneill Castle in County Sligo is perched on a bluff like it’s waiting for a royal carriage that never showed up. It’s named after Neill, which sounds like a guy who’d argue with you about the weather while pointing at nothing. The whole thing is gone, but the map still pretends otherwise, and I’m not mad about it. Pack a picnic and an excuse.

Explorer Tom Knockalongy North-East Top in County Sligo is having a massive row with a nearby tree about who has better views. The tree is winning, by the way, because it's actually growing. Mind the nettles, they're the real guards here.

Explorer Tom Knockalongy in County Sligo took about forty cups of tea to build, or so the legend goes. It’s a bit lumpy, like a biscuit that got stepped on, but charmingly so. Bring your nan, she'll know more than me.