Best attractions and places to see around Sessiaghs include a variety of historical sites, ancient ruins, and religious buildings. This region offers 14 distinct points of interest for those exploring its landscape. Visitors can discover centuries of history, from 17th-century castles to early Christian monastic sites. The area provides opportunities to explore historical architecture and significant cultural landmarks.
Last updated: June 24, 2026
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In the graveyard are several interesting stones, probably the most noted one is known as the Bishops stone, this odd shaped stone has been altered and reused several times, originally thought to have been a carved figure similar to those on nearby White Island. Another stone with a lot of history is the large slab standing west of the bishops stone, one side of the stone bears at least twelve cup-shaped hollows, see image above right, which suggest this maybe a multiple bullaun stone/cup marked stone that has been reused as an early Christian cross slab, as on the obverse face is a Greek cross in a circle with a bifurcated stem. Situated south of the bullaun stone is a holed stone, as the image shows this stone is half embedded in the ground. Immediately to the West of the holed stone is a broken 1.2 metre high stone pillar. This stone may have been damaged. http://www.megalithicireland.com/Killadeas.htm
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Devenish Monastic Site is generally considered to be the most important of Lough Erne's many island church settlements. Devenish was founded in the 6th century by St Molaise. It was raided by Vikings in 837 and burned in 1157, but in the Middle Ages flourished as the site of a parish church and St Mary's Augustinian Priory. There are extensive low earthworks on the hillside, but the earliest buildings are St Molaise's House (a very small church) and the fine round tower close by, both with striking Romanesque decorations from the 12th century. Teampull Mór, the lower church, dates from the early 13th century and has a beautifully moulded south window. It was extended to the east in about 1300, while later additions include a residential wing to the north and the Maguire Chapel to the south, with 17th century heraldic slabs. St Mary's Augustinian Priory on the hilltop dates from the middle 15th and early 16th centuries, with church, tower and small north cloister. In its graveyard stands an unusual, intricately-carved cross of the middle 15th century. - https://en.wikipedia.org/wiki/Devenish_Island - https://web.archive.org/web/20120224043140/http://www.culturenorthernireland.org/article.aspx?art_id=746
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Founded by Saint Laisrén mac Nad Froích (aka St Molaise) in the 6th century, the monastic site was built on a pilgrimage route to Croagh Patrick. As you view the Island from Trory Pier you can see the 25 metre tall 12th century round tower standing majestically above the ruined buildings. The tower has wooden floors and can be climbed by the public via a series of ladders. The tower is decorated with 12th century romanesque features, the most unusual feature is a beaded cornice running around the top of tower with head sculpture featured above the bell-storey windows. - http://www.megalithicireland.com/Devenish%20Round%20Tower.html - https://archive.ph/20121224010315/http://www.ni-environment.gov.uk/places/monuments/devenish.shtml#selection-1091.0-1091.30
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In the graveyard are several interesting stones, probably the most noted one is known as the Bishops stone, this odd shaped stone has been altered and reused several times, originally thought to have been a carved figure similar to those on nearby White Island. Another stone with a lot of history is the large slab standing west of the bishops stone, one side of the stone bears at least twelve cup-shaped hollows, see image above right, which suggest this maybe a multiple bullaun stone/cup marked stone that has been reused as an early Christian cross slab, as on the obverse face is a Greek cross in a circle with a bifurcated stem. Situated south of the bullaun stone is a holed stone, as the image shows this stone is half embedded in the ground. Immediately to the West of the holed stone is a broken 1.2 metre high stone pillar. This stone may have been damaged. http://www.megalithicireland.com/Killadeas.htm
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During WW2 Castle Archdale was a major base for flying boats and housed up to 2,500 people. Buildings such as these would have been a central location for the RAF fighters who lived here. Sometimes exhibitions are held in these courtyards to display some of the key historical notes of the use of this area during the war.
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Old Castle Archdale is situated on Castle Hill within a 520 hectare coniferous and mixed broadleaved forest. The castle was built in the 1600s and was the main castle on this former estate before its successor took it's place in the 1800s, Castle Archdale.
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Old Castle Archdale sits on a forest clifftop. It is named 'old' to distinguish it from its successor, the 18th century Castle Archdale. The castle was built by an Englishman from Suffolk who had been granted the estate in 1612 after paying 5 pounds, 6 shillings and 8 pence for the 1000 acres of land. During the Irish Rebellion of 1641 the castle was captured by Rory Maguire as part of the uprising to retake his lands that had been lost in 1607. The heir to the castle was saved by his nurse however the other children were killed. After the castle was returned to the family it was repaired and lived in until 1689. The castle saw its end during the Williamite Wars when the castle was burnt out and abandoned.
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The Sessiaghs region is rich in history, offering a variety of historical sites, ancient ruins, and religious buildings. You can visit Old Castle Archdale, a 17th-century castle ruin, or explore the significant artifacts at Killadeas Priory Church and Early Christian Stones. Another notable site is the Devenish Monastic Site, founded in the 6th century, which includes a well-preserved round tower.
Yes, Castle Archdale Courtyard Buildings is a family-friendly historical site. These buildings were once a major base for flying boats during World War II, housing up to 2,500 people, offering an interesting glimpse into the past for all ages.
You can visit the Devenish Monastic Site, one of Lough Erne's most important island church settlements, founded in the 6th century. It features St Molaise's House, Teampull Mór, and St Mary's Augustinian Priory. Additionally, the Killadeas Priory Church and Early Christian Stones offer a collection of historical stones, including the notable Bishops stone and an early Christian cross slab.
Yes, the Devenish Island Round Tower is a prominent 12th-century structure located within the Devenish Monastic Site. This 25-meter tall tower features Romanesque decorations and can be climbed by the public via a series of ladders, offering unique views.
The Sessiaghs area offers various outdoor activities. You can find several options for hiking, running, and cycling. For easy hikes, consider routes like "Old Archdale Castle via Tom's Island" or "Castle Archdale loop." Running enthusiasts can explore trails such as "Rossmore Point Beacon – Castle Archdale Marina loop," and cyclists can enjoy routes like the "Kingfisher Cycle Trail - Northern Loop." You can find more details on these activities in the dedicated guides for easy hikes, running trails, and cycling around Sessiaghs.
Yes, the Sessiaghs area provides hiking trails with varying difficulty levels. For easy walks, you can explore routes like "Old Archdale Castle via Tom's Island" or "Castle Archdale loop." More challenging options might be found within the running or cycling guides, which sometimes share paths. Check the easy hikes guide for specific details on trail difficulty and length.
Walking routes around Sessiaghs vary in length. For example, the "Old Archdale Castle via Tom's Island" route is approximately 4.6 km, and the "Castle Archdale loop" is about 4.3 km. Longer routes are also available, such as a 6.7 km "Castle Archdale Marina – Rossmore Point Beacon loop." You can find more details on distances in the easy hikes guide.
Old Castle Archdale, built in 1615, played a role in the Irish Rebellion of 1641 when it was captured by Rory Maguire. It was inhabited until 1689 when it was destroyed by fire during the Williamite Wars and subsequently abandoned.
Yes, Old Castle Archdale is situated on a forest clifftop and is categorized as a viewpoint. From its ruins, you can imagine the historical landscape and enjoy the surrounding forest scenery.
The graveyard at Killadeas Priory Church and Early Christian Stones contains several unique artifacts. These include the Bishops stone, which has been altered and reused, and a large slab with cup-shaped hollows, suggesting its reuse as an early Christian cross slab with a Greek cross design. There's also a holed stone and a broken stone pillar.
The Castle Archdale Courtyard Buildings served as a major base for flying boats during World War II, housing up to 2,500 people. These buildings were central to the RAF fighters stationed there, making them a significant historical site related to the war effort.
Visitors appreciate the rich historical context and the opportunity to explore ancient ruins and religious sites. The komoot community has shared 13 photos and given 12 upvotes, highlighting the visual appeal and historical depth of places like Old Castle Archdale and the Devenish Monastic Site.


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