Lakes around Ballynagappoge, a townland in County Down, Northern Ireland, offer diverse natural landscapes and outdoor activities. While Ballynagappoge itself does not feature notable lakes, the wider County Down area, particularly within the Mourne Mountains region, is home to several significant bodies of water. These locations provide opportunities for hiking, wildlife observation, and scenic views. The region's lakes are set against a backdrop of mountains and forests, making them popular destinations for outdoor enthusiasts.
Last updated: May 17, 2026
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A very beautiful castle in the forest
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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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It's both a surprise and a delight to find a sandy beach high up in the mountains. This small shore, formed by the beautiful Lough Shanna, makes a perfect spot for a relaxing sit-down and picnic before heading up Slieve Doan.
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This extraordinary castle sits in Castlewellan Forest Park and has a grand view over the lake. From the walking and cycle trail around the lakeside, you can enjoy the fantastic vantage point and admire the castle's turrets. Built in the mid 1800s, the castle was owned by the Annesley family. Its grounds contain a phenomenal arboretum which has been considerably extended and includes giant sequoias. The building is now a Christian conference centre and isn't open to the public. It's well worth seeing from the outside though, and the lawns around the lake are a perfect place for a picnic.
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Lovely looking castle surrounded by a lake and lots of trails for walking and cycling. Unfortunately, the castle is not open to the public and swimming is not allowed in the lake (fishing and boats are fine).
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The ornate Scottish baronial castle built in 1858 is a picturesque part of any route through or around the forest park. Sadly not open for general admission.
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For breathtaking views, consider Castlewellan Forest Park Lake, which is overlooked by the historic Castlewellan Castle and offers panoramic vistas. Another stunning option is Silent Valley Reservoir, nestled within the Mourne Mountains, providing a tranquil environment surrounded by majestic peaks.
Yes, Castlewellan Forest Park Lake is an excellent choice for families. The park surrounding the lake features extensive walking trails, mountain bike trails, and even the Castlewellan Peace Maze, one of the world's largest permanent hedge mazes, which is a fun challenge for all ages.
Lough Shannagh, located in the Mourne Mountains, is known for its soft, peaty waters and offers a great spot for wild swimming. There's a small gravel beach at its southern end, making it accessible for a refreshing dip amidst dramatic scenery. You can find a sandy beach at Lough Shanna, perfect for relaxing before or after a swim.
Strangford Lough is a significant ecological site, renowned as a bird sanctuary, especially for Brent geese migrating from Canada. It's also home to large colonies of grey seals. Lough Money, near Downpatrick, is noted for its abundant birdlife, including herons, due to its remarkably clear waters.
Castlewellan Forest Park Lake is overlooked by the ornate Scottish baronial Castlewellan Castle, built in 1858. While the castle itself is not open to the public, its presence adds a significant historical element to the landscape. Strangford Lough is also believed to be where St. Patrick landed in Ireland.
Many lakes offer excellent outdoor activities. Around Castlewellan Forest Park Lake, you'll find extensive walking and mountain bike trails. For cycling, explore routes like the 'View of Mourne AONB – Castlewellan Lake loop' which you can find in our Cycling around Ballynagappoge guide. For mountain biking, check out the 'View of Mourne AONB – Castlewellan Lake loop' in our MTB Trails around Ballynagappoge guide.
Yes, the Silent Valley Reservoir, nestled in the Mourne Mountains, offers well-maintained paths for hiking, including routes like the Viewpoint Loop and Reservoir Loop. A walk around Lough Shannagh towards Doan mountain also provides superb views and a rewarding climb. You can find more hiking options in our Running Trails around Ballynagappoge guide, which includes trails like 'Blue Quarry to Slieve Doan run'.
Kiltybane Lake, located near Cullyhanna, is a prime spot for anglers. This natural lake is stocked with rainbow trout and brown trout, offering a focused fishing experience. A permit is required for fishing here.
Visitors frequently praise the serene environments and stunning natural beauty. Many appreciate the combination of outdoor activities, from walking and cycling around Castlewellan Forest Park Lake to the tranquility and clear waters of Lough Money. The opportunity for wildlife observation, especially at Strangford Lough, is also a major draw.
Lough Money, situated near Downpatrick, is often described as a quiet, almost mystical place. Its remarkably clear water and diverse bird species make it a serene spot for contemplation or a peaceful bike ride, away from more bustling locations.
The spring and summer months (April to September) generally offer the most pleasant weather for exploring the lakes and engaging in outdoor activities. During these times, the landscapes are vibrant, and conditions are ideal for hiking, cycling, and enjoying the waterside. Autumn also brings beautiful foliage, particularly around forested lakes like Castlewellan.


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