Barrow in Casheltauna, County Roscommon (RO028-207----)

Explorer Tom The Old Schoolhouse in Ardlagheen More Or Highlake nearly got famous when a time capsule went missing from its copper turret. It’s now a private home, so if you knock, they might just tell you to go do your homework. The roof arrangement is weird enough that it probably thinks it’s a hat.

Explorer Tom Post box in Ardlagheen More has a ghost that’s too lazy to haunt it, preferring to nap inside the metal shell instead. It sits by the old monastery, collecting letters that never quite got sent or delivered. Knock twice and see if you hear a snore from within.

Explorer Tom Graveyard in Kilcooley is sitting on a low hill pretending it hasn't been expanded for centuries. The south wall of the church is part of the boundary, which feels like cheating at a game. Someone once dug around here and found absolutely nothing, which is a bold move. Stick around for the light changing, it's a show.

Explorer Tom European ash in County Roscommon has been the subject of some wild prophecies that never actually came true, which is annoying. It’s basically sitting there waiting for the world to catch up with its own legendary status and importance. Bring sandwiches, the gulls will thank you.

Explorer Tom Round tower in Carroweighter is constantly losing a rivalry with the ones in Kildare, which are way too showy for their own good. It stands there with its arms crossed, pretending it doesn’t care that everyone else gets the tourists. Count the crows, then count them again to be sure.

Explorer Tom Hawthorn in County Roscommon keeps getting picked on by the wind because it thinks being prickly makes it tough. The flowers look like they’re trying too hard to be pretty, but the thorns say otherwise quite clearly. Snap one photo, then put the phone away and actually look.

Explorer Tom Roscommon Castle in County Roscommon would explain the 1800s to a teenager by saying, 'Imagine your mum's house, but with more damp and fewer Wi-Fi signals.' It’s been sitting there judging everyone since before we had proper trousers, still looking mighty smug about it. Go now, before it gets famous.

Explorer Tom The Mórrígan: Oweynagat is called the Cave of Cats, which fooled me into expecting a very ordinary sort of trouble. Then the tale sends the Mórrígan out of it during the Táin. If the cats saw her coming, I bet they made room.

Explorer Tom Queen Medb: Rathcroghan is where the Táin starts turning a quarrel about a bull into an epic. Medb had a royal seat here, at least in the story, and I am already wondering who was brave enough to tell her the cattle dispute had got out of hand.

Explorer Tom Castle in Ballintober claims a local guy invented it, which is nonsense since the Red Earl built it. But he's charming, so who am I to argue? Bring a pen pal, they'll be jealous of your tales.

Explorer Tom Bawn in Glinsk listens to what goes on inside the walls and probably hears the Burkes arguing about who left the light on in 1630. It’s a well-preserved semi-fortified house that looks like it’s judging your posture, so stand up straight or don’t bother knocking. It's free, it's odd, what more do you want?

Explorer Tom Inchcleraun has two names, a monastery and enough legend to keep me talking well beyond the boat ride. It lies in Lough Ree between Roscommon and Longford, covering about fifty-eight hectares. Saint Diarmaid's community was founded around 560, leaving ruins now protected as a national monument. The Irish name points to Clothru, a queen in story, and Maeve also gets a chapter in the island's folklore. I would settle their argument over who owned the best view, but it is wiser to separate tales from surviving stone. There is no road across the lake; arrange a permitted boat, confirm landing and return, and respect the old religious ground. Look back at both shores once you arrive. The island sits between counties and between several very different kinds of history.