Poll na bPéist - The Wormhole - 4 Things to Know Before Visiting

This was probably the most important pilgrimage site on the Aran Islands during the Middle Ages. It have been home to seven houses of worship, but today only Teampall Brecan and Teampall an Phoill survive. Temple Brecan was built around 1200 and is flanked by a number of rectangular houses, which are believed to be the only pilgrim hostels to survive from late-Medieval Ireland.

Dún Eochla is a superb stone ring fort located at the highest point on Inishmore in the Aran Islands. Consisting of two series of walls, which with the stone hut in the enclosure, were repaired in the late 19th Century. It lies on Inishmore, at the edge of a 100 metre high cliff. A popular tourist attraction, Dún Aonghasa is an important archaeological site.

Dún Dúchathair is a prehistoric fort located in front of the sea on Inishmore in County Galway. , its still imposing remains make it one of the most famous places on the island and Its age is unknown. The fort consists of a terraced walls, reaching 6 metres high and 5 metres wide. On the inside are the ruins of various rooms, possibly from Clocháns or Beehive huts. There is also evidence of a cheval de frise protecting the entrance.

The Black Fort is a large stone fort on the cliffs at Cill Éinne, Inishmore in County Galway, Ireland. Due to erosion, it now sits on a rocky promontory that stretches out into the sea. On its outer side there are large walls, reaching 6 metres high and 5 metres wide. On the inside are the ruins of clocháns. There is also evidence of a cheval de frise protecting the entrance.

The oratory Teampall Bheanáin is situated near Kilronan on Inishmore, Aran, Galway Bay, Ireland. It dates from the 11th century. Measuring just 3m by 3m, it's thought to have been a hermitage. A unique example of Celtic church construction. It is reasonably assumed to be the tomb-shrine of the saint.

Dún Conor is a stone ringfort and National Monument located on Inishmaan, Ireland, 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.