10 Greatest Megalithic Sites In Ireland You Must Visit Now

Older than the Great Pyramids of Egypt and even Stonehenge, Ireland’s megalithic sites are among the most fascinating ancient wonders in the world.

Scattered across the country, from County Meath to Cork, Kerry, Clare, Sligo, Donegal and Carlow, these historical structures in Ireland offer a glimpse into a civilisation that thrived over 5,000 years ago. No matter where you travel in Ireland, you’re never far from one.

We’ve personally visited all of these incredible megalithic sites in Ireland, from the iconic passage tomb of Newgrange in County Meath to the Poulnabrone Dolmen in The Burren National Park in County Clare, and in this guide, we’ll show you how to explore each one that is best suited for you.

Whether you’re planning a full ancient Ireland itinerary, adding a few unique stops to your road trip, or taking day trips from Dublin, this guide covers everything you need to visit the best prehistoric sites in Ireland.

In this guide to the best megalithic sites in Ireland, you’ll find:

  • The 10 greatest ancient ruins in Ireland ranked and reviewed
  • Entry fees, opening hours and practical tips for each site
  • The best Newgrange tours from Dublin
  • The best times to visit Ireland’s historical sites
  • A quick-reference comparison table
Best megalithic sites in Ireland you must visit in 2026
The best Megalithic Sites In Ireland

WHAT ARE MEGALITHIC SITES?

Before diving into our list of the best megalithic sites in Ireland, here’s a quick primer on the types of ancient structures you’ll encounter across Ireland.

During the Neolithic period, early communities built these historic structures in Ireland, carefully aligning them with the stars, sunrises, and sunsets. Archaeologists estimate there are over 1,600 megalithic sites in Ireland,

“Megalithic” comes from the Greek words for “large stone.” These ancient sites in Ireland were built without metal tools, yet many have survived intact for over 5,000 years, a testament to the remarkable skill of the ancient people of Ireland.

The main types of megalithic monuments in Ireland are:

Passage Tombs: The most iconic ancient ruins in Ireland. They are burial chambers covered by large mounds of earth and stone, with a stone-lined passage leading to the central chamber. The most famous passage tomb in the world is Newgrange in Ireland’s Boyne Valley.

Dolmens: Ancient portal tombs consisting of two or more upright stones supporting a massive flat capstone. They were used as burial chambers and are found throughout Ireland, the United Kingdom and the Brittany region in France. Ireland’s most famous dolmen is Poulnabrone in County Clare.

Cairns: Mounds of stones often used as burial markers or territorial monuments. These historical structures in Ireland range from small piles to enormous sites like the Loughcrew Cairns in County Meath.

Are there Stone Circles in Ireland: While Stonehenge may be the most famous stone circle in the world, Ireland has its own scattered across wild landscapes. These ancient circles are believed to have held ceremonial, religious, and astronomical significance. The Drombeg Stone Circle in Cork and the Beltany Stone Circle in Donegal are two of the best megalithic sites in Ireland.


Site County Type Entry Best For Time Needed
Newgrange Meath Passage Tomb Paid Must-see, winter solstice 2–3 hrs
Loughcrew Cairns Meath Passage Tombs Free Off the beaten track 1 hr
Hill of Tara Meath Complex Free Mythology, history 1 hr
Brownshill Dolmen Carlow Dolmen Free Record-breaking capstone 30 min
Drombeg Stone Circle Cork Stone Circle Free West Cork road trip 60 min
Uragh Stone Circle Kerry Stone Circle €5 Scenery, photography 60 min
Poulnabrone Dolmen Clare Dolmen Free Photography, The Burren 60 min
Dún Aonghasa Galway Stone Fort €5 Drama, Atlantic views 2 hrs
Carrowmore Cemetery Sligo Cemetery €5 Scale, guided tours 1 hr
Beltany Stone Circle Donegal Stone Circle Free Northwest Ireland 1 hr

10 Greatest Megalithic Sites In Ireland

Here are the 10 best historical sites in Ireland, mapped in the perfect travel route, starting with the must-see Boyne Valley and continuing clockwise around the country.

1 – Newgrange, County Meath – Best megalithic site in Ireland

Newgrange is, without question, the greatest megalithic site in Ireland and one of the most important prehistoric monuments in the world.

Located in County Meath as part of the Brú na Bóinne complex, alongside Knowth and Dowth, Newgrange is a massive passage tomb built over 5,200 years ago. That makes it older than the Great Pyramids of Giza and older than Stonehenge by several centuries.

One of only two UNESCO World Heritage Sites in Ireland, Newgrange is famous for its extraordinary alignment with the winter solstice. Every year on December 21st, at sunrise on the shortest day of the year, a narrow beam of sunlight enters through the roof-box above the entrance passage and illuminates the entire inner chamber for approximately 17 minutes.

It is one of the most awe-inspiring astronomical phenomena on the planet, and the fact that it was engineered over 5,000 years ago without modern tools is mind-blowing.

Newgrange is decorated inside and out with intricate stone carvings, including the iconic triple spiral, one of Ireland’s most recognisable symbols (Kevin even got it tattooed).

Best megalithic sites in Ireland - Newgrange, County Meath. a short day trip from Dublin -
Newgrange —The famous megalithic site in Ireland, and older than the pyramids

Booking tickets before your visit to Newgrange is HIGHLY RECOMMENDED, as tickets are often booked months in advance due to the high demand.

Best Time to visit Newgrange: We visited Newgrange in March, ahead of the peak season in Ireland and lucked out with a small group of eight, making it a much more personal experience. Our guide was fantastic, and even without the winter solstice, the light reenactment inside the chamber is just amazing to witness with your own eyes.

Just be aware: the passage of Newgrange is very tight; we had one larger man on our tour who was unable to go in. If you’re claustrophobic, be prepared for a bit of a squeeze. But trust us, it is worth it!

BEST NEWGRANGE TOURS FROM DUBLIN

Before we check out the best tours from Dublin to Newgrange, it’s worth noting the most important tip for visiting the best megalithic site in Ireland: If you want to visit Newgrange, you need to book your tour well in advance. Seriously, do not just show up on the day, because you will be left disappointed.

Newgrange Guided Day Tour from Dublin

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Tip: Don’t miss out – This tour sells out fast.

Dublin daytour to Newgrange with Getyourguide - Best megalithic sites in Ireland you must visit in 2026
Click here to book: Boyne Valley with Newgrange and Bru Na Boinne Entry

There is no direct bus or train from Dublin to Newgrange, but you can get there by car. It’s a straightforward drive, taking just under an hour to reach the Brú na Bóinne Visitor Centre from Dublin, making it a great option if you have a rental car and want the flexibility to explore at your own pace.


2 – Loughcrew Cairns, Meath – Underrated Historic Site

After Newgrange, we jumped back in the car for a 45-minute drive west to the Loughcrew Cairns, one of the most underrated megalithic sites in Ireland, completely free to visit, and we recommend you do the same. This is exactly where having your own transport pays off.

Located near the town of Oldcastle in County Meath, Loughcrew Cairns is a megalithic cemetery containing nearly 30 passage tombs spread across two hilltops. The star of the show is Cairn T, perched on the highest hill with sweeping views across the surrounding landscapes of Ireland.

It’s only a 650-metre walk from the car park to the Loughcrew Cairns, but don’t be fooled, it’s steep with steps, so sturdy footwear is a must. It’s also worth noting that the path isn’t suitable for strollers or wheelchairs.

The cairns themselves are decorated with intricate Neolithic rock art and aligned with the equinox sunrise. And here’s the thing, these days, we can barely function without Google Maps, yet somehow, thousands of years ago, people figured out how to align giant stones with the rising sun to the exact day without modern technology. It makes you stop and wonder right?

On the drive from Newgrange, you’ll pass through the historic town of Kells, famous for the birthplace of the Book of Kells, the breathtaking illuminated manuscript created by Celtic monks around 800 AD, now on permanent display, which can be visited on a tour of Trinity College Dublin.

10 Greatest megalithic Sites in Ireland - Book of Kells in Trinity College
Click this link for more info about seeing the Book of Kells for yourself in Trinity College, Dublin

Ireland travel tip: Kells is a pretty little town, but there’s not a whole lot going on. We stopped briefly to grab snacks. However, if you have a bit of extra time and your own car, it’s worth taking a short detour to the Spire of Lloyd, a striking inland lighthouse replica which makes for a great photo stop and a rewarding little find for anyone who enjoys going off the beaten track in Ireland.

3 – Hill of Tara, Meath – Symbolic Ancient Site of Ireland

No guide to ancient sites in Ireland would be complete without the Hill of Tara, arguably the most historically and mythologically significant site in the entire country.

Also located in County Meath, and about 30 minutes closer to Dublin from Loughcrew Cairns, the Hill of Tara was the symbolic and spiritual heart of ancient Ireland.

According to Irish mythology and historical record, this was where the High Kings of Ireland were inaugurated, where laws were enacted, and where the most important religious ceremonies of the pagan world took place.

Tara is home to several megalithic monuments, including the Mound of the Hostages, a passage tomb dating back over 4,500 years, as well as a range of earthworks, ring forts, and standing stones that together make up one of the richest ancient archaeological landscapes in Ireland.

There is a small gift shop near the entrance, but what we enjoyed the most was the coffee shop that serves delicious pies, perfect after a day of exploring some of the best megalithic sites in Ireland!

If you don’t have your own transport, consider going on the Celtic Boyne Valley and Ancient Sites Tour from Dublin, which includes Hill of Tara, Loughcrew Cairns, Trim Castle (where parts of Braveheart were filmed), plus a stop at Fore Distillery and the ruins of Fore Abbey. A fun day trip from Dublin without the hassle of driving.

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From €70 per person Departs daily from Dublin city centre

Best for: Travellers who want to see multiple historic sites from Dublin without renting a car

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Why it’s worth it: Cover the best historical sites in Ireland
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Spots fill quickly in peak season — worth booking ahead.

Best Megalithic Sites in Ireland - Loughcrew Cairns County Meath
Click here to book: Celtic Boyne Valley and Ancient Sites of Ireland Tour

4 – Brownshill Dolmen, Carlow – Largest Dolmen in Europe

Brownshill Dolmen near Carlow town holds a remarkable record: it has the largest dolmen capstone in Europe, measuring 4.7 meters by 6.1 meters and weighing an estimated 100 tonnes. It is truly amazing for history lovers.

This ancient site in Ireland is about one hour away from Dublin, and makes a great stop if you are planning to visit Kilkenny. Set in the middle of a barley field on what was once the Browne family estate (hence the name), this colossal megalithic site in Ireland dates back over 5,000 years.

How the Neolithic people of Ireland managed to move and balance a 100-tonne stone without modern machinery remains one of archaeology’s great mysteries. It is believed that the person buried here was someone of extraordinary importance, a chieftain, king, or high priest.

Despite being one of the most remarkable megalithic monuments in Ireland, it receives a fraction of the visitors of more famous sites. Brownshill Dolmen is free to visit, and the short 5-minute walk from the car park through the countryside makes it a peaceful, atmospheric experience.

Brownshill Portal Tomb Dolmen - 10 Best Megalithic Sites in Ireland
Brownshill Dolmen is a free-to-visit megalithic site in Ireland

5 – Drombeg Stone Circle, Cork – Ireland’s Stonehenge

One of our favourite megalithic sites in Ireland, Drombeg Stone Circle is one of the finest and best-preserved stone circles in Ireland and is perfectly positioned while exploring the Wild Atlantic Way through west Cork.

Whenever we have visitors over, this historic site in Ireland is always on the itinerary, and we’ve often had the entire place to ourselves.

10 Greatest Megalithic Sites In Ireland You Must Visit Now, Drombeg Stone Circle - Happy Irish Wanderers
Drombeg Stone Circle, Cork, is another free-to-visit megalithic site in Ireland

Located between some of Ireland’s most beautiful towns, Clonakilty and Skibbereen, Drombeg consists of 17 large stones — 16 standing upright and one lying flat. This flat stone, known as the “Druids’ Altar,” is believed to have served as an altar and sacrificial stone in ancient pagan rituals. When excavated in 1957, human remains were found at the centre of the circle, dating back over 3,000 years.

Like Newgrange, Drombeg also has an alignment with the winter solstice: at sunset on the shortest day of the year, the last light of the sun aligns precisely with the two portal stones and illuminates the recumbent altar stone. The builders of these historical monuments in Ireland were not just constructing graves; they were building calendars and observatories in stone.

Drombeg Stone Circle is just an hour’s drive from Cork City and is free to visit. A short stroll from the nearby car park brings you face to face with one of the most atmospheric megalithic sites in Ireland.

While you’re in the area, there’s no shortage of other top attractions in Cork worth adding to your Ireland itinerary.


Why stress about driving when you could be enjoying a pint of Guinness instead?

Before we tell you the last few must-visit megalithic sites in Ireland, check out the following tours that take you to the most iconic landscapes and landmarks in Ireland.

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6 – Uragh Stone Circle, Kerry – Most Breathtaking Historic Site

Uragh Stone Circle is located in County Kerry and without doubt, the most scenically stunning megalithic site in Ireland and a great attraction to add to your Wild Atlantic itinerary.

Located in the Beara Peninsula, Kerry and only 20 minutes by car from the charming town of Kenmare, Uragh Stone Circle consists of just six standing stones, but it’s the backdrop that takes your breath away.

Best Megalithic monuments in Ireland - Uragh Stone Circle in Kerry by Happy Irish Wanderers
The most beautiful megalithic site in Ireland

The Uragh Stone Circle sits at the edge of Lough Inchiquin, framed by the rugged Caha Mountains and a cascading waterfall tumbling down the hillside behind the stones. On a clear day, the reflection of the stones in the water and the mountains beyond make Uragh one of the most photographed ancient sites in Ireland.

Entry costs €5, paid via an honesty box at the entrance. When we visited, the ground was very boggy; this is Ireland, after all, so waterproof shoes are a must, or keep a spare pair in the car. The upside? We had the entire site completely to ourselves.

If you can, aim to arrive in the morning for the best light (weather permitting, of course) and make the most of your photos at this amazing megalithic site in Ireland.

Uragh Stone Circle is a perfect addition to the Ring of Kerry or Ring of Beara itinerary. We would recommend staying in Kenmare, and also consider visiting Dursey Island (accessible via Ireland’s only cable car) and the spectacular Healy Pass mountain road through the Caha Mountains.

Rent a car in Ireland: The best way to explore the best megalithic sites in Ireland is by car, as most of these sites are not easy to get to with public transport. Discovery Cars is the leading platform for comparing all rental car options. Just remember, we drive on the LEFT side of the road!

7 – Poulnabrone Dolmen, Clare – Iconic Landmark in Ireland

Poulnabrone, Clare, is a portal dolmen built over 4,000 years ago and the most popular megalithic site in Ireland. A single enormous flat capstone is balanced on slender portal stones. The stark grey limestone pavement of The Burren stretching out in every direction gives the site an otherworldly, lunar quality that is unlike any landscape in Ireland.

When excavated, the tomb revealed the remains of up to 33 individuals, men, women, and children, confirming its use as a communal burial site over many centuries.

Poulnabrone Dolmen Clare Ireland, 10 best Megalithic Sites in Ireland - Happy Irish wanderers
Poulnabrone Dolmen, Clare, is the most popular Megalithic site in Ireland

We are lucky that Kate lives in Clare, so we have visited Poulnabrone Dolmen many times over the years, and every time we still look at it in amazement. The best way to visit Poulnabrone Dolmen is to incorporate it with a full day of exploring the Burren National Park.

Poulnabrone Dolmen is a perfect inclusion on a 2-week Ireland itinerary. With free entry and parking, why wouldn’t you visit?

8 – Dún Aonghasa, Galway – Most dramatic megalithic site in Ireland

For the most dramatic megalithic site in all of Ireland, nothing comes close to Dún Aonghasa, pronounced “Dun Angus”, on the island of Inishmore, Galway.

This magnificent megalithic site in Ireland sits on the edge of a 100-metre cliff dropping directly into the Atlantic Ocean. Built in a distinctive horseshoe shape (with the cliff face acting as the open fourth wall).

Getting to Inishmore requires a ferry from Doolin or Galway, which only adds to the sense of adventure. Once on the island, a steep but manageable hike brings you to the fort entrance. The views from the clifftop are among the most spectacular in Ireland.

Ferries run daily from Galway to Inishmore, leaving at 10:30 AM and returning at 5:00 PM. Click here to secure your seat.

Dún Aonghasa and the Aran Islands are must-see attractions in Ireland for history enthusiasts and nature lovers, and we highly recommend a visit. The entree to Dún Aonghasa is 5 euros per person.

Ireland Travel Tip: The best way to visit Dún Aonghasa is to stay in Doolin for a few days, allowing you to explore more of the best attractions in Doolin, such as the Cliffs of Moher and the Burren National Park.


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9 – Carrowmore Megalithic Cemetery, Sligo

Carrowmore in County Sligo is the largest megalithic site in Ireland, containing over 35 tombs that date back nearly 5,000 years — making it one of the oldest and most significant concentrations of megalithic monuments in all of Europe.

This ancient site in Ireland includes passage tombs, dolmens, and stone circles spread across a wide area of the Sligo countryside, with the dramatic silhouette of Knocknarea mountain visible on the horizon, topped by Medb’s Cairn, a massive unexcavated passage tomb said to be the burial site of the legendary Queen Medb (Maeve) of Connacht.

The best megalithic sites in Ireland - Carrowmore Cemetery, Slogo, Ireland
There are many things to see at Carrowmore Cemetery, Sligo

Carrowmore is such a significant megalithic site in Ireland, that it is currently awaiting approval as a UNESCO World Heritage Site. Guided tours are available on-site and are highly recommended to fully appreciate the scale and significance of what you’re looking at.

Carrowmore Megalithic Cemetery is open daily from 10:00am to 6:00pm (last admission 5:00pm), with adult entry at just €5.


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10 – Beltany Stone Circle, Donegal

Beltany Stone Circle in County Donegal is one of the most ancient and impressive megalithic monuments in Ireland, yet it remains far less visited than it deserves.

Dating back nearly 5,000 years to the Bronze Age, Beltany Stone Circle is older than Stonehenge and one of the largest stone circles in Ireland, with 64 remaining standing stones at a diameter of nearly 50 metres (150 feet). The site sits on a hilltop near the village of Raphoe, offering sweeping views across the Donegal countryside.

The name Beltany is believed to derive from “Bealtaine,” the ancient Celtic festival marking the beginning of summer, suggesting the circle may have been used for seasonal ceremonies thousands of years ago. Every year, the Bealtaine Fire Festival takes place to celebrate this ancient Irish tradition.

Located just a short drive from Raphoe and around 20 minutes from Letterkenny, Beltany Stone Circle is free to visit and a short 300-metre walk from the car park, a hidden gem in Ireland that is ideal for off-the-beaten-track explorers touring the northwest.


Before visiting Donegal, make sure to experience the best attractions in Northern Ireland on a 3-day tour from Dublin. Explore breathtaking sites like the Giant’s Causeway, The Titanic Experience in Belfast, Dunluce Castle, and the historic city of Derry.

Prices start at €399 per person, which includes accommodation, entrance fees and transportation. Click this link for more details!

Must visit attractions in Northern Ireland - Best megalithic sites in Ireland you must visit in 2026
The Giant’s Causeway is a must-visit attraction in Northern Ireland.


BEST TIME TO VISIT MEGALITHIC SITES IN IRELAND

Any time of year works for visiting historical sites in Ireland, but here are a few things to keep in mind:

Winter Solstice (December 21st) — Newgrange
The best time to visit Newgrange is the winter solstice, when sunlight illuminates the inner chamber. A lottery is held each year for a small number of people to witness the solstice event from inside the tomb. Apply through the Brú na Bóinne Visitor Centre website. Even if you don’t win the lottery, visiting Newgrange is a special event.

Spring & Autumn
The equinoxes in March and September are significant at Drombeg Stone Circle, where sunlight aligns perfectly with the “Druid’s Altar”. And remember, this is one of the free-to-visit megalithic sites in Ireland where you can witness a spectacle.

Summer
The most popular time to visit Ireland is the summer. All historical sites in Ireland are accessible, the weather is (relatively) kind, but tour availability is highest, so book in advance!

Off-Season (November–February)
Fewer crowds and a more atmospheric experience at open-air sites, but be prepared for boggy grounds.

If you only have time to visit one of the megalithic sites in Ireland, make it Newgrange. It’s one of the most underrated ancient wonders in the world and far less famous than it should be. We honestly think Newgrange genuinely deserves to be ranked alongside the greatest constructions in history.


FAQ: MEGALITHIC SITES IN IRELAND

Which megalithic sites in Ireland are free to visit?
Several of the historical sites in Ireland are completely free to visit, including Loughcrew Cairns, the Hill of Tara, Drombeg Stone Circle, Beltany Stone Circle, Brownshill Dolmen and Poulnabrone Dolmen.

Which is the oldest megalithic site in Ireland?
Newgrange is one of the oldest megalithic sites in Ireland, dating back over 5,200 years. Carrowmore in County Sligo may be even older, with some tombs dated to around 5,400 years ago.

Do you need to book tickets for Newgrange in advance?
Yes — absolutely! Newgrange tickets sell out months in advance, particularly in spring, summer and around the winter solstice. You can only visit Newgrange as part of an official guided tour booked through the Brú na Bóinne Visitor Centre. Booking online in advance is strongly recommended.

Can you visit Ireland’s ancient sites without a car?
Some megalithic sites in Ireland can be reached by public transport or guided tour, but most require a car. The easiest way to visit sites without a car is to book a guided day trip from Dublin — tours covering Newgrange, the Hill of Tara, and the Boyne Valley depart daily. For Dún Aonghasa, ferries run from Galway and Doolin.

Is Newgrange older than Stonehenge?
Yes, Newgrange is older than Stonehenge. It was built around 3200 BCE, making it older than the main phase of Stonehenge by about 500–700 years, and around 500 years older than the Great Pyramids of Giza.

What is the best megalithic site in Ireland for families?
Newgrange and Brú na Bóinne are ideal for families, with an excellent visitor centre, interactive exhibits, and guided tours suitable for all ages. The Poulnabrone Dolmen in Clare is also great for families — free, spacious, and easy to explore.

Are dogs allowed at megalithic sites in Ireland?
Most open-air megalithic sites in Ireland, such as Poulnabrone Dolmen, Drombeg Stone Circle, and the Hill of Tara, are accessible with dogs on a lead. Newgrange and Carrowmore, which have visitor centres, have restrictions.

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Practical Tips About Megalithic Sites In Ireland

  • Book Newgrange early. We can’t say this enough. Newgrange tickets are the hardest to get in Ireland.
  • Respect the Sites: Megalithic sites in Ireland are ancient and culturally significant places. Treat them with respect by not climbing on the stones, littering, or causing damage to the site in any way.
  • Come prepared for Irish weather: Ireland’s weather is famously unpredictable — four seasons in one day is not just a cliché. Bring waterproof layers, spare socks, and good walking shoes, even in summer.
  • Combine sites strategically. The Boyne Valley alone (Newgrange, Loughcrew, Hill of Tara) can be done in one day. Clare and Galway (Poulnabrone, Dún Aonghasa) combine beautifully. Kerry and Cork (Uragh, Drombeg) work perfectly together on a Wild Atlantic Way Itinerary.
  • Rent a car: The best way to explore the best megalithic sites in Ireland is by car, as most of these sites are not easy to get to with public transport. Discovery Cars is the leading platform for comparing all rental car options in Ireland. Just remember, we drive on the LEFT side of the road!

Ireland’s megalithic sites are not just archaeological curiosities. They are ancient wonders that connect you directly to the people who shaped Ireland over 5,000 years ago.

Whether you’re standing inside the chamber at Newgrange as your guide describes the winter solstice alignment, looking out over the Atlantic from the cliffs of Dún Aonghasa, or simply pausing beside the Poulnabrone Dolmen in The Burren, these ancient sites in Ireland will have you mesmerised.

Are there any megalithic sites in Ireland that we forgot to mention?

Plan your visit, book your tours early, and prepare to be genuinely amazed.

We love to hear about all things Ireland so please feel free to leave a comment below about how you got on, or even better, leave us a message on our socials.

Slán go fóil

Happy Irish Wanderers
Full Time Travel Couple
Happy Irish Wanderers
Full Time Travel Couple

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2 Comments

  1. […] The ancient landscapes of Neolithic Ireland show a fascinating connection between famous passage tomb complexes. Sites like Lough Crew, Tara, Newgrange, and Carrowmore in counties Meath, Sligo, and Clare share striking similarities. They also align with the stars, giving us a glimpse into the knowledge and beliefs of Ireland’s first people10. […]

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