Best lakes around Castlewellan are primarily centered around Castlewellan Lake, located within Castlewellan Forest Park. This area is nestled between Slievenaslat and Slievebeg mountains, offering views towards the Mourne Mountains. Castlewellan Lake is recognized as an Area of Special Scientific Interest, spanning approximately 40 to 42 hectares and supporting diverse aquatic flora and fauna. The park also features historic landmarks and extensive trails.
Last updated: May 2, 2026
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Slieve Loughshannagh is one of the quieter summits in the Mourne Mountains, but it rewards hikers with wide, open views over Silent Valley, Slieve Binnian, and the western Mournes. The climb isn’t too demanding, and the summit has a peaceful, windswept feel, making it a lovely spot to pause and take in the rugged beauty of the landscape.
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A very beautiful castle in the forest
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At 617m high, Slieve Loughshannagh isn't the highest in the Mournes but it does offer fantastic views down over the lough and deeper into the Mournes.
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See if you can find your way to the peace bell in the centre of the maze. Castlewellan Peace Maze, is one of the world's largest permanent hedge mazes representing the puzzle that was to become a peaceful future for Northern Ireland. To encourage a sense of common ownership, the maze was planted by people from all over Northern Ireland, plus nearly 4,000 school children. Planted in 2000
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Home to one of the most outstanding tree and shrub collections in Europe. However this beaut has numerous features to spend your time in. There's famous lakes, a stunning Victorian Castle, incredible panoramic views, scenic walking trails, 27km of Mountain Bike Trails, an onsite multi activity centre, hedge maze and equestrian centre, Castlewellan Forest Park boasts all of this and more. A real gem
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The Castle Park boating pond is a pretty little oasis in the heart of the charming seaside town of Newcastle. It features a number of swan boats that you can pedal around the lake on for a small fee.
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After walking along the Mourne Wall you will reach the peak of Slieve Loughshannagh. Slieve Loughshannagh stands at 617m high and provides excellent views south of Lough Shannagh, Ben Crom, and Binnian
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Castlewellan Lake, located within Castlewellan Forest Park, is a hub for various outdoor pursuits. You can enjoy paddleboarding, canoeing, kayaking, and Canadian canoe experiences, with equipment available for rent. Fishing for brown and rainbow trout is also popular, with spinning, worm fishing, and fly fishing permitted from non-mechanical or electrically powered boats. The lake is surrounded by a well-maintained forest path, perfect for walking and cycling.
Yes, Castlewellan Forest Park offers several family-friendly attractions. Besides the lake activities, you can explore the Castlewellan Peace Maze, one of the world's largest permanent hedge mazes. The park also features picnic areas, and the easy loop walk around Castlewellan Lake is suitable for most ages. Additionally, the Castle Park Boating Pond in Newcastle offers swan boat rentals, which is a fun activity for children.
Castlewellan Lake is an Area of Special Scientific Interest (ASSI) due to its exceptional aquatic flora and fauna. The lake's diverse bed supports a rich variety of plant and animal life, including rare species like quillwort. You might spot wetland animals, birds, and even otters. The surrounding forest park is home to one of Europe's most outstanding tree and shrub collections, including giant sequoias in the National Arboretum. For panoramic views, consider hiking to Slieve Loughshannagh summit, which offers wide, open vistas over Silent Valley and the western Mournes.
Yes, the area is rich in history. The prominent Castlewellan Castle, a Scottish baronial castle built in 1856, offers a picturesque view over the lake. While the castle itself is not open to the public as it's a conference center, its exterior and the surrounding arboretum are well worth seeing. The Castlewellan Peace Maze, planted in 2000, also represents a significant historical and cultural initiative for Northern Ireland.
The easy loop walk around Castlewellan Lake is a popular choice, offering scenic views of the woodlands, Castlewellan Castle, and Slievenaslat. This path is relatively flat and suitable for most people. For more challenging options, the wider Castlewellan Forest Park offers numerous trails. You can find detailed running routes, including those around the lake and towards Slievenaslat Summit, in our guide to Running Trails around Castlewellan.
Absolutely. Castlewellan Forest Park features 27km of dedicated mountain bike trails. There are also traffic-free bike rides available, such as the loop around Castlewellan Lake. For more cycling options, explore our guide to Traffic-free bike rides around Castlewellan or our guide to MTB Trails around Castlewellan.
The lakeside walk around Castlewellan Lake is relatively flat and well-maintained, making it suitable for many people, including those with limited mobility. The wide forest path ensures ease of access to enjoy the scenic beauty.
Castlewellan Lake and its surrounding forest park are beautiful year-round. Spring brings blooming flora, while autumn offers vibrant foliage. The lake's activities and trails are generally accessible throughout the year, though specific seasonal events or equipment rentals might vary. Always check local conditions for the best experience.
Generally, swimming is not permitted in Castlewellan Lake. However, it may be allowed during specific events that have been approved by the Newry, Mourne and Down District Council. For current regulations, it's advisable to check with local authorities or the Castlewellan Forest Park visitor information.
Yes, Castlewellan Forest Park, which encompasses the lake, provides facilities for visitors. There are picnic areas available, and a coffee cart operates seasonally. Parking is also available within the forest park, making it convenient for accessing the lake and its trails.
Visitors frequently praise the stunning natural beauty, the variety of activities available, and the peaceful atmosphere. Many enjoy the easy loop walk around the lake, the scenic views of Castlewellan Castle, and the opportunity to spot wildlife. The extensive arboretum and the Peace Maze are also highly regarded attractions that contribute to a full day of exploration.


Still not found your perfect lake around Castlewellan? Check out the guides of these regions to see even more beautiful places.