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Address: Cill Mhuirbhigh | Inis Mór, Province of Connacht, Ireland
Phone Number: +353 99 61008
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9:00 am - 6:00 am
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Sun - Sat 9:00 am - 6:00 am

Perched on a cliff overlooking the Atlantic Ocean, Dun Aonghasa is the...

Perched on a cliff overlooking the Atlantic Ocean, Dun Aonghasa is the largest of the prehistoric stone forts of the Aran Islands. It is enclosed by three massive dry-stone walls and a chevaux-de-frise consisting of blocks of limestone set vertically into the ground to deter attackers. Originally constructed c.1100BC, it was re-fortified around 700-800 AD. Excavations revealed significant evidence of prehistoric metalworking, as well as several burials.

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TripAdvisor Reviewer Highlights

Read all 652 reviews
Visitor rating
  • 504
  • 125
    Very good
  • 16
  • 5
  • 2
Lace up your walking boots

By far, one of the most dramatic sites along Ireland's west coast. But be forewarned: the trek up to the fort requires a steady gait and the magnificent view is not for the... read more

5 of 5 starsReviewed 4 days ago
Judith F
Boston, Massachusetts
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652 Reviews from our TripAdvisor Community

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Boston, Massachusetts
Level Contributor
36 reviews
6 attraction reviews
common_n_attraction_reviews_1bd8 20 helpful votes
5 of 5 stars Reviewed 4 days ago NEW

By far, one of the most dramatic sites along Ireland's west coast. But be forewarned: the trek up to the fort requires a steady gait and the magnificent view is not for the acrophobic.

Thank Judith F
Philadelphia, Pennsylvania
Level Contributor
72 reviews
13 attraction reviews
common_n_attraction_reviews_1bd8 27 helpful votes
5 of 5 stars Reviewed 1 week ago via mobile

We hiked up to Dun Aonghasa and enjoyed the magnificent views. The edge isn't for the faint of heart, but the views all around are spectacular. My brother even set out again after dark and for some great nighttime shots. Would love to go again some day!n

Thank Peggy C
Level Contributor
10 reviews
common_n_attraction_reviews_1bd8 8 helpful votes
5 of 5 stars Reviewed 1 week ago

First of all, I would say I haven't see something more beautiful. The view of the cliffs and the waves was beautiful. The fort is located on the north side of the island, accessible by car or carriage and a 10 min climb. You have tour guides available, brochures in most languages an the visitor center is quite helpful. Be... More 

Thank AlexandraTeodora26
Level Contributor
28 reviews
17 attraction reviews
common_n_attraction_reviews_1bd8 6 helpful votes
5 of 5 stars Reviewed 2 weeks ago

My wife and I rented bikes and this was our first stop. We arrived at Dun Aonghasa and a sweet lady bought a bunch of us tour guides, she was so nice! The hike up to the fort/cliffs is about 15 minutes. It's steep and if it's raining, i imagine slippery. Be careful! Once up, the views are definitely incredible... More 

Thank Aaron S
Level Contributor
7 reviews
5 of 5 stars Reviewed 3 weeks ago

Dun Aonghasa is an iron age fortress - or palace - in the middle of nowhere on the largest of Aran Islands, Inishmore. It is a long walk from the car pari - 20 minutes for a runner - but it is worth it. What is difficult to understand is what it actually is, and why it was constructed. It... More 

Thank Matti S
Edinburgh, United Kingdom
Level Contributor
52 reviews
24 attraction reviews
common_n_attraction_reviews_1bd8 21 helpful votes
5 of 5 stars Reviewed 3 weeks ago

This was the highlight of our trip to Aran Islands. It's a fascinating historical site in a truly stunning setting on too of a sheer cliff. We could have easily spent twice as long there without getting bored but unfortunately we had to catch the ferry back. I really recommend doing this as a bike tour as that allows you... More 

Thank Dagmar B
Charleroi, Belgium
Level Contributor
15 reviews
5 attraction reviews
common_n_attraction_reviews_1bd8 11 helpful votes
5 of 5 stars Reviewed December 24, 2015

You cannot reach the top by bike. You have to walk from the visitor center. The view is beautiful but for your safety don't get too close to the cliffs.

1 Thank amaurydg
Kingsport, Tennessee
Level Contributor
112 reviews
53 attraction reviews
common_n_attraction_reviews_1bd8 47 helpful votes
5 of 5 stars Reviewed December 19, 2015

Dun Aonghasa is one of my favorite places in all of Ireland. The walk up, while steep, is within the capabilities of most people - just take your time and enjoy the beautiful views. These ancient walls repelled enemies by land, while the 300 foot cliffs protected by sea. And the cliffs! You've got to see this!

1 Thank tim_b_toolman
Huntington, New York
Level Contributor
34 reviews
14 attraction reviews
common_n_attraction_reviews_1bd8 23 helpful votes
5 of 5 stars Reviewed December 5, 2015

This must be what heaven looks like!! The trek up is not to bad and as others have said, well worth the effort. My family (25, 23 and 20 year olds) was truly blown away by the beautiful view and we stayed well away from the edge of the cliff. Had we not had a time constraint, I don't think... More 

1 Thank Audrey K
New York, New York
Level Contributor
45 reviews
19 attraction reviews
common_n_attraction_reviews_1bd8 36 helpful votes
5 of 5 stars Reviewed November 29, 2015

One of the most beautiful things we saw- the walk up was beautiful, and when you get to the top- we both liked this spot over Cliffs of Moher.

1 Thank Alison8583

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