Some days out you watch. These ten you do — a steel path over the Atlantic, a boat on a river under a mountain, a coaster racing down through a glen. The days everyone still talks about at Christmas.
The range — cliff bridges, a show cave, a bog-mountain staircase, a floating obstacle course, treetop ropes and one proper little mountain. Every kind of brave gets a turn.
Who it suits — honestly, the older ones. Several of these carry real gates: the Gobbins asks for a 4ft minimum and suits fit kids of around 8 up, Let's Go Hydro is age 7+ and 110cm, Oakfire's aerial courses are 10+. Slieve Gullion and Colin Glen's woodland trails carry the younger crew.
Book before you travel.The Gobbins is guided and pre-booked only, Carrick-a-Rede is timed tickets, Hydro is pre-booked sessions — and Marble Arch tours fill at set times. None of the big four are turn-up days.
Cost — three cost nothing to do: Slemish is free, Cuilcagh is a free walk (£6 car park) and Slieve Gullion is free with £5 parking. The ticketed ones run from about £12.50 an adult at Marble Arch to around £25 a session at Hydro.
What to wear — proper walking boots are required at the Gobbins and essential on Slemish and Cuilcagh; bring a fleece for Marble Arch (a steady 9–10°C underground); Hydro provides wetsuits and buoyancy aids; Infinity wants grip socks (£2).
When — Hydro is a summer thing; the Gobbins runs 1 March to early January; Cuilcagh is open all year but the weather turns fast; Carrick-a-Rede closes in high winds. Check the day before you set off.
1
The Gobbins Cliff Path
Islandmagee, near Larne · £23.50 adult, £17.50 child
Steel bridges, railed walkways and a tunnel bored clean through the headland, all bolted to a sheer sea cliff with the Atlantic breaking underneath — Northern Ireland's most thrilling coastal walk, and every step guided. You'll cross the famous Tubular Bridge, duck through the sea tunnel and pass seabird colonies (puffins nest here in early summer). It's earned: about 2.5–3 hours, roughly 3 miles, with climbs equal to 50 flights of steps. Family ticket £52.50.
2.5–3 hour guided walk£23.50 adult · family £52.50Boots required · 4ft minimum · pre-book, no walk-ups
Ballintoy, Causeway Coast · ~£16 adult, £8 child · NT members free
A single-file rope bridge slung across a chasm to a tiny island, said to hang almost 100ft above the Atlantic. The clifftop walk out is a stunner — views to Rathlin and, on a clear day, Scotland — then comes the crossing: the sway, the sea moving far below, the grin on the far side. Allow about an hour and a half all-in. Roughly £16 an adult, £8 a child, under-5s free — and everyone needs a timed ticket, National Trust members included.
~1.5 hours~£16 adult · car park space includedTimed tickets only · closes in high winds (full refund)
Florencecourt, Co. Fermanagh · ~£12.50 adult, family ~£39
The adventure that goes down instead of up. A guided walk deep beneath Fermanagh through floodlit chambers of stalactites and mirror-still black pools — and when water levels allow, it starts with a boat glide along the underground river. Tours run about an hour to 75 minutes below ground with around 154 steps, and it holds a steady 9–10°C whatever summer is doing, so pack a fleece. Around £12.50 an adult. Brilliant from about age 5 up.
~2 hours with the visitor centreFree on-site parking · café & shopPre-book · heavy rain can shorten or close tours
Florencecourt, Co. Fermanagh · Free walk · £6 car park
The Stairway to Heaven: a timber boardwalk laid across wild blanket bog, then a steep flight of about 450 steps climbing the mountainside to a platform with one of the finest views in the county. Make no mistake, this is a real mountain walk — allow 3 to 4 hours and roughly 13km, with no shelter and no toilets on the trail. The walk itself is free; the trailhead car park is £6, pre-booked online, and it fills on fine weekends.
3–4 hours · ~13kmFree walk · £6 car park (pre-book)Boots, waterproofs & own water · no dogs on the protected bog
Dunmurry, west Belfast · Glen free to walk · rides ticketed
A wooded river glen beneath Black Mountain with a full adventure park bolted onto the hillside. The Black Bull Run alpine coaster races down through the trees, zip lines fly out over the valley, and high ropes and a climbing wall wait for whoever's still hungry. The glen itself — six miles of woodland paths, weirs and footbridges — is free to walk with free parking. The rides run in timed, booked sessions and sell out in the holidays.
Half a day with a couple of ridesGlen free · free parking · café on siteEvery ride has its own age & height minimum — check before you go
Ireland's biggest inflatable aqua park, floating on a lake just south of Belfast. Wetsuit on, buoyancy aid clipped, then 50 minutes of climbing walls, slide towers, trampolines and monkey bars — falling in is the whole point. Sessions run through the warmer months at around £25 a head, kit provided. The rules are firm and worth knowing: age 7+, at least 110cm tall, able to swim 50m unassisted, and children 8 and under need an adult in the water.
50-min session · allow a half-day~£25 · wetsuit & buoyancy aid providedAge 7+ · 110cm minimum · must swim 50m · pre-booked only
The indoor one — for the day the weather cancels the mountain. A full trampoline arena with wall-tramps and dodgeball zones, a ninja obstacle course with hanging rings and a battle beam, foam pits and a giant air bag to leap into. Sessions run on the hour, priced per hour with rates that shift by day, and under-5s jump cheaper. Grip socks are required at £2 a pair, every jumper needs a signed waiver, and it's closed Mondays.
Sessions on the hour · 1–2 hoursPer hour · varies by day · under-5s cheaperGrip socks £2 + signed waiver · book online · closed Mondays
The adventure the youngest crew members get to win. The Giant's Lair story trail winds through the forest with a giant to rescue along the way, there's a zip wire in the adventure playpark, and the 10km forest drive climbs to the best view in South Armagh — do the drive last, when the legs are done. Free to walk or cycle in, and the playpark and Giant's Lair are free too; parking is £5 beside the playground. Pitched at toddlers to about 11.
Open daily from 9amToilets · accessible & baby-changingDogs aren't allowed in the Adventure Playpark
A proper little mountain of your very own. Slemish is thought to be the plug of a long-extinct volcano, rising to about 437m over the Antrim fields — by tradition the hill where a young St Patrick herded sheep. The climb is short but honest: roughly a mile round trip, about an hour, no marked path, and rocky ground that gets properly steep near the top. The reward runs from Lough Neagh to the Scottish coast. Free, with a small free car park at the base.
About 1 hour up & downFree · free car park & toilets at the baseSteep rough scramble — sturdy boots, not trainers
Faughan Valley, near Derry~Londonderry · Tree Trek from £22
The treetop finisher. Pick your line through the woods: the Zip Trek flying over woodland, water and cliff, the Tree Trek high-ropes and via-ferrata course through the trees, or the Full Aerial Challenge that combines the lot. Sessions run roughly 1 to 3 hours by course — Tree Trek from £22 child / £26 adult, zips from £24. Aerial courses are age 10 and up with a minimum height of about 1.4m, and 10–15s need an adult alongside.
1–3 hours by courseTree Trek from £22 · zips from £24Age 10+ · ~1.4m minimum · booked sessions, not a walk-in park
The sea-cliff day: the Gobbins on a booked morning walk, lunch at its visitor centre café, then up the coast for an afternoon timed ticket at Carrick-a-Rede — two crossings over the Atlantic in one day.
The Fermanagh day: a booked Marble Arch Caves tour in the morning, then the Cuilcagh boardwalk after lunch — the river under the mountain, then the steps up it. Fresh legs only; the Stairway is 3–4 hours on its own.
The Belfast day: Colin Glen's coaster and zip lines on a morning session, then across the city for a booked 50 minutes on the water at Let's Go Hydro. Book both before you leave the house.
Keep exploring
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