Castles in Bornholm offer a glimpse into the island's strategic past, situated in the Baltic Sea. This Danish island features a landscape characterized by dramatic cliffs, dense forests, and coastal views. Its history of fortifications reflects centuries of power struggles and defense. Exploring these sites provides insight into Bornholm's cultural heritage and natural beauty.
Last updated: May 15, 2026
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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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The castle ruins are the ultimate tourist attraction on the island of Bornholm. We were lucky that it was quieter there during the off-season. The view from the ruins is very beautiful, and the hiking trails surrounding them are also not to be missed.
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the route with this spot often requires a hike-a-bike
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Make a point to explore Hammershus Castle, the largest medieval fortress in Northern Europe. These impressive ruins sit above the Bornholm Coastal Path and are well worth the detour. Offering you breathtaking views of the sea and the surrounding landscape as you walk through the remains of the old walls and towers, you can almost imagine the castle in its prime. It served as a symbol of power and was a key part of the island's history. The panoramic vistas from here are perfect for a moment of quiet reflection.
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Large visitor center. Ample paid parking is available. Also wheelchair accessible.
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The old castle ruins are worth a visit.
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Great ruin with little corners that invite you to linger.
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Hike around Hammeren recommended. Sure-footedness required
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Bornholm is home to several historically significant fortifications. The most famous is Hammershus Castle Ruins, the largest medieval castle ruin in Northern Europe, offering dramatic cliff-top views. Other notable sites include Lilleborg Ruins, a royal fortress nestled in the Almindingen forest, and Gamleborg Viking Fortress, Bornholm's oldest major fortified complex dating back to 750 AD.
Yes, several castles on Bornholm are suitable for families. Hammershus Castle Ruins is a popular choice, offering extensive grounds to explore and a modern visitor center. Lilleborg Ruins, set in the Almindingen forest, provides a serene experience amidst nature, which can be enjoyable for families seeking a quieter outing.
The castles on Bornholm are often integrated with the island's stunning natural landscape. Hammershus Castle Ruins are perched on a 74-meter-high cliff, offering panoramic views of the Baltic Sea. Lilleborg Ruins are located on a rocky cliff that was once surrounded by Borresø lake, providing beautiful forest and lake scenery. These sites blend history with wild nature and dramatic coastal views.
The areas around Bornholm's castles are excellent for outdoor activities. Near Hammershus Castle Ruins, you can find excellent hiking trails along the coast. The Almindingen forest, home to Lilleborg and Gamleborg, offers numerous hiking and mountain biking opportunities. For more detailed routes, explore the Hiking in Bornholm or MTB Trails in Bornholm guides.
Yes, Hammershus Castle Ruins are generally accessible by public transport on Bornholm. Local buses serve the area, and there is a modern visitor center, Brohuset, nearby which provides facilities and information. For specific routes and schedules, it's best to check local transport information.
The best time to visit Bornholm's castles is typically during the warmer months, from late spring to early autumn (May to September), when the weather is pleasant for exploring the outdoor ruins and trails. During these months, all facilities are usually open, and the natural scenery is at its best. Winter visits are possible, but some facilities might have reduced hours, and weather conditions can be more challenging.
Generally, dogs are welcome at the outdoor areas of Bornholm's castle ruins, including Hammershus, Lilleborg, and Gamleborg, usually on a leash. It's always a good idea to check specific site regulations before your visit, especially for any indoor visitor centers or restricted areas.
The modern visitor center near Hammershus Castle Ruins, known as Brohuset, offers an exhibition detailing daily life at the castle around 1575. It also includes a café where you can enjoy refreshments and a terrace with superb views towards the ruins and the Baltic Sea.
For Hammershus Castle Ruins, you could easily spend 2-3 hours exploring the extensive site, the visitor center, and enjoying the views. For Lilleborg and Gamleborg in the Almindingen forest, a visit to each might take 1-2 hours, especially if combined with a walk through the surrounding nature.
While Hammershus is very popular, Lilleborg Ruins and Gamleborg Viking Fortress, both located in the Almindingen forest, tend to be less crowded. They offer a more serene experience amidst beautiful forest scenery and provide a different historical perspective on Bornholm's past.
Gamleborg Viking Fortress is unique as Bornholm's first major fortified complex and the oldest castle of the crown on the island, constructed around 750 AD. It served as the seat of Bornholm's kings during the Viking Age and early Middle Ages, offering a fascinating look into ancient Scandinavian defense strategies and Viking Age fortifications, predating other castles like Lilleborg and Hammershus.
Near Hammershus Castle Ruins, the Brohuset visitor center has a café. The surrounding area also offers various accommodation options and eateries in nearby towns. For castles within the Almindingen forest like Lilleborg and Gamleborg, you might need to venture a short distance to find cafes or accommodation in the closest villages or towns.


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