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Denmark
Capital Region of Denmark

Bornholm

Top 20 Lakes in Bornholm

Best lakes in Bornholm are found across this Danish island in the Baltic Sea, offering a diverse landscape of both natural and man-made water bodies. Many of these lakes are former quarries that have since filled with water, creating unique geological features. The island's terrain includes rugged cliffs, tranquil forests, and open heathland, providing varied settings for its numerous lakes. These inland spots are notable for their distinct characteristics and contribute to Bornholm's natural appeal.

Best lakes in Bornholm

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Last updated: May 13, 2026

Gamledam Pond

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Idyllic raised moor lake with water lilies, cotton grass, frogs and horsetail. Everything a photographer's heart desires - or just to look at and enjoy.

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View of Opalsøen

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with a good view of the lake

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Castle ruins of the "small castle" with a view of the idyllic Borresø. As everywhere on the island, information boards provide interesting information about the history of historical relics.

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Pedersker Sandstone Quarry

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The Pedersker Sandstenbrud is something special. Especially in May, when many frogs are croaking here.

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Zipline at Opalsee

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only available seasonally in summer and on certain days

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Popular around Bornholm

An Island Circumnavigation — The Bornholm Coastal Path

National Cycle Route 10: around the island of Bornholm

Get on your bike and discover Bornholm on two wheels

The most beautiful day trips on Denmark’s Bornholm

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Cycling in Bornholm

Road Cycling Routes in Bornholm

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MTB Trails in Bornholm

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An Island Circumnavigation — The Bornholm Coastal Path

Hiking Collection by

Paul_C

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Stummi 🙋🏼‍♀️
October 20, 2025, Lilleborg Ruins and View of Borresø

Walking around Ekkodalen, you pass the remains of the 12th-century castle ruins. By building it, the Danish king wanted to assert his own claim to Bornholm against Hammershus Castle, from which the powerful Archbishop Eskil of Lund ruled most of the island. Although Lilleborg was considerably smaller, it was more defensible than Gamleborg. Possible builders include Sven III Grathe, Knut V Magnusson, or Valdemar I the Great, who reigned from 1157 to 1182. Coins from the latter two have been found. The power struggle between church and king also led to the destruction of the castle: in 1259, Prince Jaromar II of Rügen came to the aid of Archbishop Jakob Erlandsen, who had been imprisoned by King Christopher I, and burned Lilleborg down. However, coins dating from this period have been found, suggesting that the castle was inhabited even after its destruction. (Wikipedia)

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Vanessa
April 16, 2025, Gamledam

A beautiful, small lake in a clearing. It's covered in water lilies and offers a great place to pause for a moment. Take a deep breath, enjoy, and move on.

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Stop and snack on the apples in September

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Taking a break and eating apples from the trees.

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This quarry is open to the public. The waterlogged pits have developed into natural ponds, where you can observe dragonflies. There's even the opportunity to take a rest on a bench with a table.

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A wonderful place, well worth a visit. Above the lake are the ruins of Lilleborg Castle. From up here you have a wonderful view of the historical grounds.

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Mystical castle ruins with a wonderful view.

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A beautiful, peaceful place to stay. In summer you can hear the calls of the frogs here.

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Frequently Asked Questions

What unique natural features characterize Bornholm's lakes?

Many of Bornholm's lakes are former quarries that have filled with water, creating dramatic landscapes with steep cliffs and clear, deep waters. These include the distinct 'gemstone' lakes like Rubinsø, Smaragdsø, and Safirsø, known for their vibrant colors. Natural lakes like Hammersø are found within rift valleys, offering serene settings.

Are there family-friendly lakes in Bornholm?

Yes, several lakes on Bornholm are suitable for families. Gamledam Pond is an idyllic raised moor lake known for its natural beauty and is considered family-friendly. The former quarry at Pedersker Sandstone Quarry has also developed into natural ponds where families can observe dragonflies and enjoy picnic areas.

What outdoor activities can I do near Bornholm's lakes?

Bornholm's lakes are excellent starting points for various outdoor activities. You can find numerous cycling routes, such as those in the Cycling in Bornholm guide, or explore mountain biking trails from the MTB Trails in Bornholm guide. Running enthusiasts can also find suitable paths, including routes like the 'Emerald Lake loop from Hasle' mentioned in the Running Trails in Bornholm guide.

Can I swim in Bornholm's lakes?

Yes, swimming is possible in some of Bornholm's lakes. Opalsø (Opal Lake) is a popular spot for swimming, though its significant depth means it's best for confident swimmers. Smaragdsø also features a sandy beach, making it suitable for a refreshing dip.

Are there historical sites near Bornholm's lakes?

Absolutely. The area around Lake Borresø is home to the ruins of Lilleborg Castle, offering a historical experience with a wonderful view of the idyllic lake. Information boards provide insights into the history of these relics.

What adventurous activities are available at Bornholm's lakes?

For the adventurous, Opalsø offers unique experiences. During summer, you can enjoy cliff jumping from 7-meter edges or take an exhilarating ride on a cable car or zipline over the lake. The Zipline at Opalsee is a popular highlight for thrill-seekers.

What kind of wildlife can I expect to see around Bornholm's lakes?

Bornholm's lakes are rich in wildlife. At Gamledam Pond, you can observe water lilies, cotton grass, and frogs. Smaragdsø is known for its diverse fish population, including roach, tench, perch, and pike. The former quarry at Pedersker Sandstone Quarry is a great place to spot dragonflies and hear the calls of frogs.

When is the best time to visit Bornholm's lakes?

The lakes are beautiful year-round, but for swimming and outdoor activities like ziplining, the summer months (June to August) are ideal. Spring and autumn offer pleasant temperatures for hiking and enjoying the tranquil scenery, with fewer crowds. Winter can provide a unique, quiet experience, though some facilities might be seasonal.

Are there opportunities for fishing in Bornholm's lakes?

Yes, fishing is a popular activity at some of Bornholm's lakes. Safirsø, nestled within a forest, is known for excellent freshwater fishing, where both children and adults can catch small fish without requiring a license. Smaragdsø also boasts a diverse fish population.

What makes the 'gemstone' lakes of Bornholm special?

The 'gemstone' lakes – Rubinsø, Smaragdsø, and Safirsø – are special because they are remnants of past mining and quarrying activities. Their unique geological formations, combined with the play of light on sunny days, often result in vibrant, shimmering water colors, making them particularly photogenic and tranquil inland spots on the island.

Where can I find quiet, secluded lakes for relaxation?

For quiet and relaxation, Safirsø, nestled within a forest, offers a secluded and peaceful experience with pleasant picnic areas. The lakes in Almindingen, Bornholm's largest forest, also provide tranquil settings for slow-paced walks away from more bustling areas, surrounded by reed beds and quiet forest paths.

Are there viewpoints offering panoramic views of Bornholm's lakes?

Yes, there are several excellent viewpoints. The View of Opalsøen offers clear perspectives of both Opalsø and Hammersø. Additionally, the ruins of Lilleborg Castle provide a wonderful view of the idyllic Lake Borresø.

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

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