A great grey Norman keep rising straight out of the water on the edge of Belfast Lough — cannons on the battery, a climb to the battlements and a view right across to Belfast. Said to be one of the best-preserved Norman castles in Ireland.
What it is — an 800-year-old Norman castle on a rocky spur in Carrickfergus harbour, with a towering keep, curtain walls and gatehouse.
What you'll see — cannons lined along the battery, a restored banqueting hall, figures in armour, a giant model of the fortress and exhibitions on medieval life — then the climb up through the keep to the battlements and the view over the lough.
How long — allow an hour to an hour and a half; longer if you read every panel or pair it with a walk round the town and marina.
Cost — £6 adult, £4 child (5–17), under-5s free, family £18, concession £4.50. Pay at the gate — no online booking, so bring a card or cash.
Getting there & parking — Marine Highway, right on the harbour front, a short drive or train from Belfast, with parking beside the castle (some pay-and-display).
Food nearby — nothing on-site, but Carrickfergus town and the marina have plenty within a short walk.
Closed Mondays (bar bank holidays), and the keep is up tight, steep spiral stairs — great for able climbers, not for prams or wheels above the ground floor.
Plan your visit
Can I just turn up? Yes — buy your ticket at the gate.
No booking needed for a normal visit — you pay at the ticket office on the day. It's £6 for adults, £4 for children (5–17), under-5s free, with a family ticket at £18 (up to five, max three adults) and concessions £4.50. Tickets are sold on-site only, so bring a card or cash. The castle runs Tuesday to Sunday and is closed Mondays except bank holidays. Confirm the day's hours before you set off, as times shift with the season.
Toilets on siteCannons & exhibitionsParking beside the castleGround level accessibleAssistance dogs only
Two to remember:
It's a historic keep, so the way up is by tight, steep spiral stone stairs — grand for able climbers, not for prams or wheels above the ground floor. And it's closed on Mondays outside bank holidays. Always confirm the day's opening on the day, as seasonal and event closures can change things.
Before you set off
What to bring
🧥A warm coatIt's exposed on the lough — the wind picks up at the top of the keep, and it makes the view all the better.
👟Grippy shoesThe keep stairs are tight, steep and worn smooth by centuries of feet — flat, sure footwear beats sandals.
📷A cameraThe harbour reflection and the view over Belfast Lough are the shots to take home.
🥪A picnicGrab a bite in the town or by the marina after — Carrickfergus has plenty within a short walk.
Good to know
Everything before you go
Cost
£6 adult, £4 child (5–17), under-5s free, concession £4.50, family £18 (up to five people, max three adults). Tickets are sold on-site at the ticket office only — no online booking. Confirm on the day.
Hours
Open Tuesday to Sunday, closed Mondays except bank holidays. Opening runs roughly 9:30am–5pm in summer and shorter hours in winter, with last admission about half an hour before closing. Times vary by season, so confirm on the day.
Ages
Works for all ages — the cannons, armour and giant model pull in younger children, the history and the climb suit older kids and grown-ups. Little ones need holding on the steep keep stairs.
What you'll see
The Norman keep, the curtain walls and gatehouse, cannons along the battery, a restored banqueting hall, exhibitions on medieval life, figures in armour and a giant model of the castle. A short film sets the scene.
Parking
Parking is available right beside the castle on Marine Highway. Some of it is pay-and-display, so bring change or a card just in case. Confirm on the day.
Toilets
Toilets on site.
Dogs
Assistance dogs only — pets aren't allowed inside the castle.
Accessibility
The ground level and courtyard are accessible, but the keep is a medieval tower reached by narrow, steep spiral stairs — the upper floors aren't suitable for wheelchairs or prams. Confirm what's open on the day.
How long
Allow an hour to an hour and a half to do it justice, longer if you're reading every panel or pairing it with a walk round the town and marina.
Questions
Before you go
How much does it cost?
£6 for adults, £4 for children aged 5–17, and under-5s go free. A family ticket is £18 for up to five people (max three adults), and concessions are £4.50. Tickets are bought at the gate — there's no online booking — so bring a card or cash. Worth confirming on the day.
Do I need to book?
No — just turn up and buy your ticket at the office when you arrive. It's open Tuesday to Sunday, closed Mondays outside bank holidays.
Is it good for young children?
Yes — the cannons, the armour and the giant model of the castle are a big hit, and there's plenty of open courtyard to explore. Just keep hold of little ones on the steep keep stairs.
Can we climb the keep?
Yes — you can go up floor by floor to the top, where the view opens right across Belfast Lough. The stairs are tight, steep and worn, so grippy shoes help and it's not one for prams.
Is it wheelchair or pram friendly?
The ground level and courtyard are accessible, but the keep's upper floors are reached by narrow spiral stairs and can't be done with wheels or a pram. Confirm what's open on the day.
Can I bring the dog?
Only assistance dogs are allowed inside the castle. Belfast Lough has plenty of nearby seafront walks if you've the dog along.
Getting there
Marine Highway, Carrickfergus, County Antrim, BT38 7BG — right on the harbour front, a short drive or train ride from Belfast, with parking beside the castle.
The story goes that the Norman knight John de Courcy began Carrickfergus Castle around 1177, planting it on a rocky spur jutting into Belfast Lough after seizing much of the surrounding country. Historians reckon it grew over the following centuries from a compact stronghold into the great walled fortress you see today, with its towering keep, curtain walls and gatehouse.
Few castles in Ireland have seen as much. It was besieged and held by turns across the medieval and later wars, garrisoned as a working fortress for the best part of 800 years — one of the longest continuous military records of any castle in these islands — before passing into State Care. Today it's looked after as a state care historic monument, its keep filled with exhibitions on medieval life, a restored banqueting hall and cannons that once faced out across the water. Stand on the battlements with the lough in front of you, and it isn't hard to see why de Courcy chose this rock.