Herculanean temple

Explorer Tom This footbridge over the Naniken River was part of Guinness brothers’ landscaping plans back in the day. It’s not really a folly, just a bridge with a story. The squared stone voussoirs are quite the show-off. Hop across if you dare and capture that arch!

Explorer Tom Grotto in Heronstown is a tiny stone cave that thinks it’s very mysterious and ancient. It’s been sitting in St. Anne's Park since 1860, probably waiting for someone to light a candle inside. Don’t get stuck in there, it’s not that big!

Explorer Tom Holm Oak in County Dublin is surrounded by seagulls who are constantly telling it bad jokes and stealing its acorns. The birds think they run the place now and the tree is too polite to argue back. Have a look and decide if I was lying about the bird invasion.

Explorer Tom St. Anns Well in County Dublin sits at the base of a ridge in St. Anne's Park. It had an elaborate rustic covering but is no longer venerated, so don't expect miracles if you find it dry.

Explorer Tom Dublin gave this park a river, a pond and a thousand ways to get distracted. St Anne's Park has a little river with a name worth saying aloud: the Naniken runs through it, and a diversion feeds the duck pond. The Guinness family began assembling this land in 1835 and filled their estate with gardens and playful follies. Dublin bought a large part in 1939, turning the old private ground into a public park. A thousand tree varieties? I can reliably identify a Christmas tree, and even that depends on December. Look for the Millennium Arboretum, begun with a thousand tree varieties. I could probably identify twelve on a good day, and several of those by the labels. The former great house is gone, but the avenues, garden buildings and rose beds still show how much work once went into arranging the landscape. There is room here for a long walk without paying to enter, plus paths and playing fields for people with more energy than me. Follow the Naniken for a while; it is a better guide than my sense of direction.

Explorer Tom Wych Elm in County Dublin was planted by a builder who was probably thinking about lunch while he dug the hole. It’s got that rugged, old-school charm that makes it look like it’s been standing there since the invention of the wheel. Dare you to say hello to it out loud, but do it quietly so it doesn’t get embarrassed.

Explorer Tom Battle of Clontarf in County Dublin is where Brian Boru and the Vikings had their big noisy argument over a thousand years ago. The ground probably still remembers who kicked whom, so step gently or you’ll wake them up.

Explorer Tom Dollymount Strand in County Dublin is famous for the ridiculous smuggling story where someone tried to hide a whole van of cheese under the sand. It’s actually where most Dubliners learn to drive, which explains why half the city smells like burnt clutch and fear. Have a wander and a wonder, but keep an eye out for novices who are about to reverse into your foot.

Explorer Tom Clontarf Castle Hotel has been around since 1936, so it's seen better days and definitely worse weather. The picture shows it looking a bit tired, so maybe the ghost of the original owner is just napping in the lobby.

Explorer Tom Kilbarrack Cemetery is sitting by the sea, which means the wind is always trying to blow your hat off. I’d check if any of the headstones are wearing sunglasses; it gets pretty bright down there.

Explorer Tom Graveyard in Kilbarrack Lower was originally built right on the strand before they walled it off. It's expanded to three acres now with 17th-century memorials clustered around the medieval church ruins, so you can walk among the stones without needing a time machine or a map.