Best attractions and places to see around Derryboy, a locality in County Down, Northern Ireland, offers access to a variety of sites. Situated near Killyleagh and close to Strangford Lough, the region blends historical significance with natural beauty. Visitors can explore ancient landmarks, serene natural features, and cultural sites within the surrounding area. The diverse landscape provides numerous opportunities for exploration and discovery.
Last updated: May 9, 2026
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Nendrum Monastery was a Christian monastery founded in the 5th century. The monastery finished somewhere between 974 and 1178, but the church survived until the 15th century. You can visit the ruins if you're riding past.
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Bike parking, nice coffee and eats, friendly staff, nice view of the lough
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Sketrick Castkle is a historic landmark situated on Sketrick Island near Whiterock. The castle dates back to the 12th century and the grounds are free to explore.
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This large tower house was built in the mid 15th century and was actively involved in warfare during the 16th century. It would have originally been four storeys high with a boat bay and subterranean passage. There were four chambers at ground level, the largest had a vault built on wicker centring and two ovens. The small unlighted room could have been a lock up or treasury. The tower-house was relatively complete until half of it collapsed in a storm in 1896. Part of the bawn wall survives to the north and east of the castle.
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This is the best example in Northern Ireland of a pre Norman ecclesiastical enclosure with its buildings. Nendrum is associated with St Mochaoi who died at the end of the 5th century, and is linked with St Patrick in a much later source. Notices of Nendrum clergy, including three bishops, begin in the 7th century and the excavation of a sophisticated tide mill on the shore near the site has shown that the mill was active in the early 7th century, which underlines the early importance of Nendrum. References continue until a fire in 976, perhaps a Viking raid, when the head of the church (erenagh) was burned in his house. In the late 12th century a small Benedictine monastic cell was founded on the site, but by 1302–1306 this was the parish church, abandoned for Tullynakill on the mainland in the 15th century. H.C. Lawlor excavated the site from 1922 to 1924, when enclosure walls, church and round tower were restored. The glacial hill is crowned with three concentric walled enclosures, irregularly oval in plan. Little is known of the outer cashel, only partly in state care. In the middle cashel on the south-west side are circular platforms for huts, which excavation suggested were craft workshops, and a rectangular building known as the ‘schoolhouse’, also a workshop. In the inner cashel were the most important buildings, including the church with its graveyard and the base of a round tower north-west of the church. The west wall of the church was rebuilt in the 1920s, incorporating a reconstructed sundial at the south-west corner. Finds from the 1920s excavation, including the well-known bell of Nendrum, are in the Ulster Museum and Down Museum at Downpatrick. Underwater archaeological work in the 1990s showed that there is a stone jetty south-east of the enclosure, now inundated in the lough, and medieval pottery was found close by. ( source: department of communities )
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It's home to two yacht clubs: Strangford Lough Yacht Club and 1.5 kilometres (0.95 mi) to the north, Down Cruising Club. Between the two yacht clubs is Sketrick Castle, a 15th-century tower house on Sketrick Island, now in a state of ruin. To the south of Whiterock is Ballymorran Bay.
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Daft Eddy's Restaurant / Pub is very popular with Cyclists, and is just up the hill. There is also a Car park with full facilities if you look back to the mainland just on your left.
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Love spending time here. There is a park bench to the far east corner, and to the left of that hosts one of the best views of the Lough. When tides out you can see traces of the old Salmon fisheries. Its so quiet, and there is a picnic area just to the side of the visitors centre. The site also boasts fragments of an early Sun Dial that have been placed by the entrance to the Church.
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The region around Derryboy is rich in history. You can visit the ruins of Sketrick Castle, a 12th-century tower house on Sketrick Island, or the ancient Nendrum Monastery Ruins, one of the best examples of a pre-Norman monastic site in Northern Ireland. Other notable historical landmarks include Killyleagh Castle, Inch Abbey, and Dundrum Castle.
Derryboy is close to Strangford Lough, an Area of Outstanding Natural Beauty, offering scenic views and diverse wildlife. You can explore Delamont Country Park, home to the impressive Strangford Stone, or enjoy tranquil riverside walks and birdwatching at Quoile Pondage Nature Reserve. The majestic Mourne Mountains are also a short drive away for dramatic landscapes.
Yes, there are several walking opportunities. For easy hikes, consider routes like the Delamont Long Walk, the Sketrick Island loop via Sketrick Castle, or the Strangford Stone – Delamont Country Park loop. You can find more details and routes in the Easy hikes around Derryboy guide or the broader Hiking around Derryboy guide.
Cyclists can enjoy a variety of routes in the area. Options range from easy loops like the Tullynakill Church Ruins loop from Balloo, to more challenging rides such as the Delamont to Ardglass Harbour loop or the Portaferry Marina – Whiterock Harbour loop from Delamont. Explore these and more in the Cycling around Derryboy guide.
For stunning views of Strangford Lough, visit Whiterock Harbour, a settlement and viewpoint home to yacht clubs. The grounds of Sketrick Castle also offer scenic coastal views. Additionally, the Nendrum Monastery Ruins provide quiet contemplation with beautiful vistas across the lough.
Many attractions in the area are suitable for families. Delamont Country Park offers walking trails and open spaces. Historical sites like Sketrick Castle and Nendrum Monastery Ruins are categorized as family-friendly. Whiterock Harbour is also a pleasant spot for families to enjoy the waterfront.
To delve into local culture and history, consider the Killyleagh Heritage Trail, which highlights historical figures and local heritage. The Sir Hans Sloane Centre in Killyleagh features a museum dedicated to the renowned collector. The Down County Museum, housed in a restored 18th-century gaol, offers insights into 9,000 years of local history.
Near Sketrick Castle and Whiterock Harbour, you'll find Daft Eddy's Coffee Shop, which also operates as a bar and restaurant, offering scenic views from Sketrick Island. The Nendrum Monastery Ruins also have a picnic area near the visitor's centre.
Strangford Lough is a highly significant natural feature, designated an Area of Outstanding Natural Beauty. It's a tidal lough dotted with islands, providing a habitat for diverse wildlife and offering numerous scenic views. Many local attractions and activities, such as Delamont Country Park and Whiterock Harbour, are situated along its shores.
While popular sites are well-known, consider visiting Kilmood Church, a pretty church on a rocky knoll with a fresh drinking water tap in its courtyard. The Nendrum Monastery Ruins, while historical, offer a quiet, contemplative atmosphere with traces of old salmon fisheries visible at low tide.
Visitors frequently praise the scenic coastal views, the historical significance of sites like Sketrick Castle, and the tranquil atmosphere of places like Nendrum Monastery Ruins. The combination of natural beauty, historical depth, and opportunities for outdoor activities like walking and cycling are highly appreciated.


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