16 Ancient Irish Ring Forts to Visit: Complete Travel Guide
Ireland’s rolling green landscapes hold secrets of a distant past, where ancient kings, warriors, and communities once thrived atop windswept hills. Scattered across the countryside, hill forts stand as silent witnesses, along with stone circles, to Ireland’s Iron Age and early medieval history—monuments of power, defense, and ritual.
From the imposing Hill of Tara, the legendary seat of the High Kings, to the rugged stone ramparts of Dún Aonghasa on the cliffs of Inis Mór, each fort tells a story. Some were royal strongholds, others tribal gathering places, and many are steeped in myth—whispering tales of warriors, druids, and forgotten battles.
Whether you’re drawn by history, archaeology, or simply the thrill of standing where ancient eyes once scanned the horizon, Ireland’s hill forts offer a powerful connection to the past. So lace up your boots, pack your curiosity, and let’s uncover the mysteries of these timeless landmarks.
- 16 Ancient Irish Ring Forts to Visit: Complete Travel Guide
- What are Irish Ring Forts?
- General Tips for Visiting Hill Forts
- Most Scenic Hill Forts
- Most Mythologically Significant Forts
- Hill of Tara
- Dún Dúchathair (Galway)
- Rathgall Hillfort, Wicklow
- Rathcroghan, County Roscommon
- Cahercommaun, Clare
- Grianán of Aileach, Donegal
- Dún Aonghasa, Aran Islands, Galway
- Dún Dúchathair, Aran Islands, Galway
- Doonconor Carrownlisheen, Galway
- Knockdrum Stone Fort, Cork
- Cahergall, Kerry
- Staigue Fort, County Kerry
- Leacanabuile Stone Fort, County Kerry
- Dunbeg Hill Fort, Dingle Peninsula
- Northern Ireland Ring Forts
- Explore More Irish Culture and Folklore
- Exploring the fascinating regions of Ireland
What are Irish Ring Forts?
At one point in time it is believed that there were around 50,000 ring forts in Ireland, (Fitzpatrick, 2009 Maps | Irish Archaeological Features). The National Monuments Service places ringforts in 600-900AD period.
Ring Forts are circular fortified settlements that have various names including: ráth, Fairy Forts, Dun, lios, Cashel, caher or cahir. Essentially these ring forts are a rounded or oval space surrounded by an earth bank where the earth comes from a ditch surrounding the ring fort.
In some areas of Western Ireland a massive stone wall enclosed the site in place of a bank and ditch. Both types of ring fort were built to protect farmsteads and villages more defensive than military during the early Christian period. The building within the ring forts were usually timber houses but occasionally stone structures were built and you can see some of the remains.
Ring Forts usually contained souterrains dating to the early medieval period, which are underground passages or chambers. The underground chambers were used as escape routes in case of an attack and a place to conceal any valuables and provide storage for foods and animals.
An example of a hill fort that became a Norman stronghold, would be the Rock of Dunamase, which was being used a hill fort in the 9th Century, but when the Norman barons invaded Ireland it was converted to a defensive Castle.
General Tips for Visiting Hill Forts
Wear sturdy footwear—many sites are uneven or rocky.
Check accessibility—some are remote with no facilities.
Respect preservation rules—avoid climbing on ancient walls.
Combine trips—pair forts with nearby historical sites (e.g., Newgrange, the Burren, or the Cliffs of Moher).
Most Scenic Hill Forts
Dún Aonghasa (Inis Mór, Galway)
Why? Perched on 100m cliffs overlooking the Atlantic.
Tip: Visit at sunset for breathtaking views.
Legend: A Fianna warrior stronghold, where Fionn Mac Cumhaill’s band trained. Local tales speak of a giant king who built it in one night, hurling stones from the mountains.
Doonconor (Dún Conor), Inishmore, Co. Galway
Legend: The “Fort of Conchobar,” tied to a mythical king who defied the sea itself. Some claim waves still carry his defiant shouts.
Knockdrum Stone Fort, Co. Cork
Legend: Its underground chamber was a fairy meeting place—locals once left milk offerings to appease the Aos Sí.
Why? 360° panoramas of Lough Swilly and Derry.
Myth: Linked to the god Dagda and the Tuatha Dé Danann.
Why? Cliffs of Dingle + crashing waves backdrop.
Cahercommaun (Clare, The Burren)
Why? Dramatic limestone karst landscape.
Most Mythologically Significant Forts
Legend: Seat of the High Kings; Lia Fáil (Stone of Destiny).
Key Myth: Where the Tuatha Dé Danann ruled.
Emain Macha (Navan Fort, Armagh)
Legend: Capital of Ulster in the Táin Bó Cúailnge (Cattle Raid of Cooley).
Key Myth: Home of Queen Macha and the Red Branch Knights.
Legend: Gateway to the Otherworld (Oweynagat Cave).
Key Myth: Where the Táin epic begins.
Legend: Possibly linked to the Fir Bolg tribe.
Best Combo of Scenic + Mythic
Legend: Stunning views + ties to the god Dagda.
A “Black Fort” with sea cliffs and folklore.
Legend: Ireland’s oldest known settlement (7,000 BC), said to be where the Fir Bolg first landed before their wars with the Tuatha Dé Danann.
Navan Fort (Emain Macha), Co. Armagh
Legend: Ulster’s mythical capital, where Queen Macha cursed warriors with birth pangs, leading to Cú Chulainn’s solo stand in the Táin.
Pro Tips:
Many western forts like Dún Aonghasa have fierce winds – dress accordingly
Northern sites (Emain Macha, Grianán) have excellent visitor centers
Download the Heritage Ireland app for AR reconstructions
Hill of Tara
Location: Near Navan, about 50km NW of Dublin.
Entry Cost: Free (Visitor Centre ~€5).
Facilities: Parking, visitor centre (seasonal), guided tours, walking trails.
The Hill of Tara, in County Meath, is one of Ireland’s most iconic ancient sites, revered as the legendary seat of the High Kings and a place of profound ritual significance. This sprawling ring fort complex, known as the Ráith na Ríog (Fort of the Kings), dates back over 5,000 years, with its most prominent earthworks—the Lia Fáil (Stone of Destiny) and the Royal Enclosure—symbolizing its role as a sacred ceremonial and political center.
According to Irish mythology The Lia Fáil (Stone of Destiny) roared when touched by the true High King. It is said to be the capital of the Tuatha Dé Danann, where gods like Lugh ruled.
Archaeologists believe it was less a permanent fortress and more a gathering place for festivals, inaugurations, and assemblies, blending Iron Age fortifications with older Neolithic passage tombs like the Mound of the Hostages. Overlooking the lush Boyne Valley, Tara remains a place of pilgrimage, where history and legend intertwine beneath the ever-changing Irish sky.
Dún Dúchathair (Galway)
Location: Accessible via a 30-minute walk from Kilronan village – wear sturdy shoes for the rocky terrainEntry Cost: Free (unguided).
Facilities: No formal facilities; rugged terrain, best for experienced walkers.
Called the “Black Fort” due to its association with the dark Fomorian race of Irish mythology. Perched dramatically on the cliffs of Inis Mór in the Aran Islands, Dún Dúchathair (The Black Fort) is one of Ireland’s most atmospheric ancient sites.
This impressive semi-circular stone fort, dating back to the Iron Age (around 500 BC), features massive drystone walls up to 6 meters thick that hug the cliff edge, offering stunning views of the Atlantic Ocean. Unlike the more famous Dún Aonghasa nearby, Dún Dúchathair remains free to visit with no entry fee, though the rugged approach requires sturdy footwear as there are no formal pathways or visitor facilities.
Local legend claims this was a stronghold of the mysterious Fir Bolg, the pre-Celtic inhabitants of Ireland who were said to have built similar forts across the country before being defeated by the Tuatha Dé Danann. The fort’s ominous name and isolated location have inspired tales of supernatural happenings, with some claiming it was a place of ancient rituals or a lookout post against mythical invaders. While less restored than other Aran forts, its wild, untouched state makes it particularly evocative for visitors seeking a more authentic experience of Ireland’s ancient past.
Rathgall Hillfort, Wicklow
Location: Near Tullow, Co. Wicklow.
Entry Cost: Free (unguided).
Facilities: No formal facilities; rugged terrain, best for experienced walkers.
The Rathgall Ring is one of the largest Ring Forts in Ireland and located near Shillelagh – Tullow road, about 6 km east of Tullow. This stone rampart is built from limestone boulders which enclose an enormous oval shaped site.
The Hill Fort has four concentric stone walls and covers an area of 18 acres and has extensive panoramic views. Excavations began at the hill fort in 1969 and revealed important finds including evidence of a house, metal workshops for casting bronze weapons and tools. Other finds included glass beads, clay moulds, bronze objects and gold beads.
Rathcroghan, County Roscommon
Location: 5km northwest of Tulsk village
Entry to the outdoor sites is free, while the Rathcroghan Visitor Centre (with immersive exhibitions and guided tours) charges €7 for adults, €5 for seniors/students, and €15 for families. Open daily (10am–5pm, shorter winter hours),
This is one of Ireland’s most significant archaeological landscapes, serving as the ancient royal capital of Connacht and the legendary gateway to the Otherworld (Oweynagat Cave). This vast complex includes 240 archaeological sites, with the Rathcroghan Mound (a ceremonial inauguration site) and the mystical Cave of the Cats (linked to the Morrígan goddess and the epic Táin Bó Cúailnge).
The centre offers multimedia displays on Celtic mythology, archaeological finds, and access to guided tours of the ancient monuments—a must-visit for anyone exploring Ireland’s mythic heartland.
Cahercommaun, Clare
Location: Near Carran, in the Burren.
Entry Cost: Free (open site).
Facilities: No facilities; remote, rocky terrain—hiking boots recommended.
Cahercommaun is a triple stone ringfort in County Clare. It was built on the edge of a cliff around 800 AD. 16,500 tons of stone had been used to build the inner wall alone. The fort is, according to legend, a “fort of the women” where legendary warrior queen Medb may have sheltered during cattle raids, per local folklore.
The excavation of the ring fort uncovered one of the most important Iron Age collections found in Ireland. From the collection, a set of sheep shears and a saddle quern are on loan to the Clare County Museum from the Irish Antiquities Division of the National Museum of Ireland.
Grianán of Aileach, Donegal
Location: Near Burt, overlooking Lough Swilly.
Entry Cost: Free.
Facilities: Parking, interpretive signs, panoramic views.
Grianán of Aileach is probably the best known monument in Inishowen, County Donegal. Situated on a hilltop 250m above sea level the view from the stone fort of Aileach is breathtaking. From this viewpoint you can see the entire peninsula with Lough Foyle and Lough Swilly glistening in the light.
Situated around 10 miles from the town of Burt this ring fort dates back to around 1700BC. It is linked to the ancient Tuatha de Danann who worshipped the Sun God, Dagda who was said to have ordered the building of this stone fort as a monument to his dead son. The circular fortress, later destroyed by Muircheartach Ua Briain in revenge – legend says he ordered each soldier to carry away one stone. It is thought that St Patrick visited the site in the 5th century and baptised the local chieftain, Eoghan here.
When I first visited the Hill Fort many years ago there was only a small parking lot and you had to climb a hill up to the site. These days you can easily walk up to and all around as it is partially accessible for wheelchair users. There is a winding ramp that leads up to the main path to the fort, which is up a moderate slope.
Take a moment to visit The Old Church Visitor Centre where the ancient legends come alive through state-of-the-art multimedia exhibits exploring the mythical Tuatha Dé Danann gods, the iconic Grianán of Aileach ringfort, and Inishowen’s rich heritage. Admission is €5 for adults, €3 for children/seniors, and €12 for families – 2 adults + 2 children.
Dún Aonghasa, Aran Islands, Galway
Location: Inis Mór, Aran Islands.
Entry Cost: €5 (adult), €3 (child).
Facilities: Visitor centre, guided tours, cliff-edge views.
Often featured in iconic photographs of Ireland Dún Aonghasa, on the Aran Islands is a ring fort with half of it falling into the sea. The legend of Dun Aonghasa states that is was built by the Fir Bolg before their mythical battle with the Tuatha Dé Danann. Some believe its cliff-edge location was meant to deter Otherworld spirits,but excavations have revealed it dates back to the Bronze Age or 1100 BC.
Dún Dúchathair, Aran Islands, Galway
Location: Inis Mor, Aran Islands
Entry Cost: Free.
Facilities: Parking, interpretive signs, panoramic views.
The Black Fort is located on Inis Mór in the Aran Islands. It is a dramatic cliffside stone fort offering breathtaking Atlantic views and an air of ancient mystery. This imposing drystone structure, dating back to the Iron Age, features massive walls and a strategic clifftop position, though its origins remain shrouded in local folklore—some associate it with the mythical Fir Bolg tribe.
Unlike its famous neighbor Dún Aonghasa, Dún Dúchathair has no entry fee and is freely accessible to visitors year-round, though the rugged terrain requires sturdy footwear. With no formal visitor facilities, the site rewards intrepid explorers with raw, untamed beauty and a palpable sense of connection to Ireland’s Celtic past.
*Note: Reaching Inis Mór requires a ferry €25–€30 round-trip from Rossaveal
Doonconor Carrownlisheen, Galway
Location: Inishmaan Island, Connemara region, near Clifden.
Entry Cost: Free.
Facilities: Remote, no formal facilities—wild and scenic.
Dún Conor is a stone ringfort and National Monument located on Inishmaan, Connemara, measuring about 69 m N-S and 35 m E-W; although smaller than Dún Aengus, it has thicker walls, up to 6 m in places. The fort is believed to date back to the first or second millennium BC. A pirate queen’s lookout post – local stories tell of Granuaile (Grace O’Malley) using it to raid ships.
Knockdrum Stone Fort, Cork
Location: Near Castletownshend.
Entry Cost: Free (key available locally for inner chamber).
Facilities: Small parking area, coastal views.
This is one of the largest and finest stone forts in Ireland and was probably built in the early centuries AD before Christianity came. The underground chamber is said to be a fairy dwelling – locals once left offerings to the Aos Sí here.
Approximately 29 metres in diameter the fort has thick walls some 3 metres wide and standing almost 2 metres high. Access to the fort is through a narrow entrance on the north eastern side of the walls. The site is owned by the Irish Government which has declared it a national monument.
Cahergall, Kerry
Location: Near Cahersiveen.
Entry Cost: Free.
Facilities: Cahergall has parking and info boards
Cahergall Stone Fort (Irish: Cathair Gheall, “Stone Fort of the Frenzy”) is steeped in legend, with locals claiming it was magically built overnight by druids—cursing its builders to eternal wandering as spirits. Myth links it to warrior Cian, father of the god Lugh, and tales tell of battles here against the monstrous Fomorians. Local lore has it built by the mythical “Black Hag” (Cailleach) in one night, with stones carried in her apron.
The imposing 4m walls and unique spiral staircases (said to be watchposts against supernatural threats) fuel beliefs it was a fairy fort of the Aos Sí, while whispers persist of secret tunnels connecting it to nearby Leacanabuile Fort. Visitors are warned: the wind carries ancient murmurs here at dusk
Staigue Fort, County Kerry
Location: Nestled in a scenic valley near Sneem on the Ring of Kerry (signposted from the N70).
Entry Fee: €5 (honor system, cash only) – payable at the small entrance hut.
Facilities: Basic parking area, no restrooms or visitor center (nearest amenities in Sneem, 10km away).
This massive drystone ringfort (dating to 300-400 AD) is one of Ireland’s finest, with walls 4m high and 5m thick. Local lore claims it was built by the mythical Fianna warriors as a training ground or by a giant king who could stride across mountains. Some whisper it’s linked to the Otherworld, with tales of hidden tunnels and fairy mischief. The fort’s name (An Stéig in Irish, meaning “the approach”) hints at its strategic role—though whether for kings, outlaws, or supernatural beings depends on who’s telling the story!
Nearby: Combine with a visit to Loch Luíoch (a lake said to be haunted by the ghost of a Fianna warrior).
Leacanabuile Stone Fort, County Kerry
Location: Near Cahersiveen on the Ring of Kerry
Entry Fee: Free (unguided open site).
Facilities: Small parking area, no restrooms or visitor center (nearest facilities in Cahersiveen, 3km away).
This well-preserved drystone fort (dating to 800–1200 AD) clings to a hillside with dramatic views of Valentia Island. Its name (Leac na Buíle in Irish) translates to “Flagstone of the Frenzy”, hinting at local legends of ancient battles or druidic rituals.
Folklore claims it was a stronghold of the mythical warrior Cian, father of the hero Lugh, and some say its collapsed walls were brought down by supernatural forces during a legendary siege. The fort’s strategic position suggests it guarded against both human invaders and Otherworldly threats from the nearby Púca’s Glen, a ravine associated with the shape-shifting Púca spirit.
Tip: Wear sturdy shoes for the uneven terrain, and bring a camera—the views over Dingle Bay are spectacular at sunset.
Dunbeg Hill Fort, Dingle Peninsula
Location: Near Dingle.
Entry Cost: €4 (adult).
Facilities: Small visitor hut, coastal cliff walks.
Just as dramatic a location as Dun Aonghasa Dún Beag fort is a small but impressive and elaborate example of a promontory fort on the Dingle Peninsula. Linked to the “Battle of Ventry” saga where Fionn Mac Cumhaill defended Ireland from invaders.
Built on a sheer cliff which projects South into Dingle Bay at the base of Mount Eagle, its archeological excavation took place in the late 1970’s.
The inside of the hill fort contains the remains of a souterrain that leads to an earthen defense and a large stone house. There are four ditches of fosses and five mounds that make up the entirety of the Ring Fort. The fort is said to be Linked to Fionn Mac Cumhaill’s Fianna warriors – local tales claim they used the fort’s sea cliffs to spot invading ships.
Northern Ireland Ring Forts
Emain Macha, Navan Hill Fort, Armagh, Northern Ireland
Location: Near Armagh city.
Entry Cost: Free (Visitor Centre £5)
Facilities: Exhibition centre, guided tours, immersive displays.
Emain Macha, was said to be the traditional seat of the kings of Ulster and the capital of the Ulstermen the Navan Hill Fort, is an enclosure approximately two miles west of the city of Armagh. This monument, measuring 236 meters across, is situated on a small hill and is surrounded by several other prehistoric sites, including Haughey’s Fort, a late Bronze Age hillfort; and the King’s Stables, an artificial pond created circa 1000 BC.
The site was initially occupied in the Neolithic period and then again during the Bronze Age. A small enclosure was surrounded by a wide shallow ditch and a row of timber uprights.
The interior of the enclosure was occupied by a figure-eight structure that was renewed on a number of occasions; the skull of an ape, imported from North Africa, was found in one of the wall-slots.
Irish folklorist believe that Queen Macha cursed Ulster’s warriors to suffer birth pains in battle (the “Pangs of Ulster”), leading to Cú Chulainn’s solo defense in the Táin Bó Cúailnge here.
Emain Macha has been traditionally interpreted as a royal site along with Tara, Knockaulin, and Rathcroghan, and the archaeological evidence suggests that all of these sites were major ritual centers during the Iron Age.
Mountsandel Fort, Coleraine, Derry, Northern Ireland
Location: Near Coleraine.
Entry Cost: Free.
Facilities: Woodland trails, river walks, interpretive panels.
The Mountsandel Fort is a prehistoric fort dating from the Mesolithic period, located in Coleraine, County Derry, this fort is a gigantic grassy mound dug into the centre of the fort, overlooking the River Bann. This is Ireland’s oldest human settlement site, said in lore to be where the first Fir Bolg landed.
Mountsandel Hill Fort is an earthwork located on the bank of the Bann River, and resembles a hill hollowed out at the top. The fort is surrounded by a deep defensive ditch, dating from the 12th century and houses were found here that date back 7000 years along with animal bones and carved flints which are now on display at the Ulster Museum.
Irish ring forts are an important part of Ireland’s history and culture. They were built in defensive positions and had many uses over the centuries. Today, you can still find these fascinating structures dotting the Irish landscape, along with Celtic Crosses, ancient Abbeys, reminding us of our past and providing a glimpse into how people lived in ancient times.
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