Bornholm feels unlike anywhere else in Denmark. The Baltic island combines rugged granite cliffs, deep forests, a medieval fortress, white round churches and some of the country’s finest beaches, all within distances that are short enough for an unhurried holiday.
Danes often call Bornholm the Sunshine Island, and it has long been especially popular with Danish, German and Swedish visitors. International travellers sometimes overlook it in favour of Copenhagen, which is precisely why the island can be such a rewarding addition to a Denmark trip.
This guide takes you through the ten Bornholm experiences from my original Danish article. I have kept the same order and updated the practical details for 2026, including a few claims that needed correcting. Most natural attractions are free, but transport, parking and seasonal activities still need a little planning.
Watch my Bornholm video for a first look at the island:
If you have not chosen a base yet, my separate guide explains where to stay on Bornholm. See accommodation across Bornholm here.
1. Walk through Hammershus Castle Ruins
Hammershus is the one attraction I would put on almost every first-time itinerary. The fortress occupies a rocky headland on northern Bornholm, with wide views across the Baltic Sea and towards the island’s dramatic coast. Children have space to explore, while adults get both the scenery and several centuries of Danish history.
The ruins are often described as Northern Europe’s largest medieval castle ruin. The National Museum of Denmark explains that Hammershus served as a fortress, administrative centre, storehouse and state prison during almost 500 years of use. It was abandoned as a stronghold in the 18th century and protected as a historic monument in 1822.
Entry to the ruins and the visitor centre is free, but the main car park is subject to a seasonal charge. Do not climb or walk on the old walls. The modern visitor centre is a good first stop because its exhibition makes the layout and history much easier to understand.
2. Test the echo in Ekkodalen
Ekkodalen, or Echo Valley, lies in Almindingen forest near the centre of the island. Its steep granite sides, old woodland and open meadow make it an easy place to experience Bornholm’s geological character without committing to a long hike.
The original Danish guide called Ekkodalen itself 12 kilometres long. More precisely, Ekkodalen forms part of Bornholm’s longest fissure-valley system, which runs for about 12 kilometres across the island; Destination Bornholm describes the named valley itself as roughly two kilometres long. The Danish Nature Agency’s Almindingen guide has the most useful background and a map of the area’s sights.
For the classic echo, stand near H.C. Ørsteds Kilde and try the Danish call “Hvad drikker Møller?” The returning sound supplies the punchline “øller”, or beers. It is delightfully silly and tends to work equally well for children and adults.
3. See the waterfall in Døndalen
Døndalen is a green fissure valley on Bornholm’s north-east coast. The Døndale stream drops about 20 metres through the valley, creating the waterfall usually promoted as Denmark’s highest. It is most impressive after wet weather and in winter or spring; during a dry summer, the flow may be far less dramatic.
The straightforward route from the car park is approximately one kilometre each way. You can extend the walk deeper into the valley or climb to Amtmandsstenen, a viewpoint above the trees. The official Døndalen walking guide describes the basic route as easy, though the extension and the steep climb to the viewpoint require more effort.
The waterfall does not begin at Amtmandsstenen, despite what older descriptions sometimes imply. Think of the rock as an optional viewpoint near the falls rather than their source. Wear shoes with decent grip because forest paths and rocks can be slippery after rain.
4. Spend a beach day at Dueodde
Dueodde stretches along the southern tip of Bornholm and is the island’s classic beach day. The sand is exceptionally fine, the beach is broad, and shallow sections can work well for families when the sea is calm. The landscape of dunes, pine trees and pale sand looks very different from the rocky north coast.
A long wooden ramp leads from the main car park towards the beach, making this one of Bornholm’s more accessible coastal stops. Conditions in the Baltic can change, however, so supervise children and follow any local safety notices rather than assuming the water will always be gentle.
The lighthouse is another local landmark, but access and opening dates can vary. For the beach itself, bring shade on hot days and something windproof outside midsummer. Dueodde is beautiful throughout the year, although swimming is naturally a summer pleasure.
5. Explore Helligdomsklipperne and Sorte Gryde
Helligdomsklipperne, the Sanctuary Cliffs, are among Bornholm’s most striking coastal landscapes. Waves and weather have shaped the granite into steep formations, narrow clefts and caves between Tejn and Gudhjem. Stairs lead down from the area by Bornholm Art Museum, but the terrain close to the water is uneven.
Sorte Gryde is the best-known cave here and is about 60 metres long. The older Danish article called it 60 metres deep, which gives the wrong impression. Take care on wet stone and do not enter rough coastal sections when conditions are unsafe.
You may see the egg sacs of the cave spider, which resemble small white lanterns. There is no need to sensationalise it as a close relative of a tarantula. The spiders are part of the unusual cave environment and generally keep out of the way.
In summer, a small boat normally links Gudhjem with the cliffs when weather permits. The official Sanctuary Cliffs information is the best place to check seasonal access and local facilities before setting out.
6. Find the rocking stone in Paradisbakkerne
Paradisbakkerne, the Paradise Hills, is a forested and rocky landscape in eastern Bornholm. Its best-known curiosity is Rokkestenen, an enormous glacial boulder balanced so that it can, at least in theory, be made to rock.
The stone weighs around 35 tonnes. It once moved more readily, but today many visitors discover that even a determined group cannot shift it. The Nature Agency notes that smaller stones have become wedged underneath, so not getting it to move is no reason to feel defeated.
The walk matters as much as the boulder. Forest lakes, granite outcrops and narrow paths make Paradisbakkerne a fine half-day destination, particularly if you want a more active experience away from the coast. Choose a marked route that suits your time and footwear rather than treating the stone as a roadside photo stop.
7. Visit Østerlars Round Church
Bornholm has four medieval round churches, and Østerlars is the largest and best known. Its thick circular walls, central pillar and wall paintings make it unlike a typical Danish village church. The building dates from around the middle of the 12th century and still functions as an active parish church.
Stories linking Bornholm’s round churches to the Knights Templar and hidden treasure are entertaining, but they are theories rather than established history. Inside, concentrate on the architecture and surviving frescoes. Photography is allowed without flash because strong light can damage the paintings.
The church’s English visitor information lists seasonal opening hours and admission. The building can close temporarily for services, funerals, baptisms and weddings, so check the calendar on the day of your visit.
8. Book a meal at Det Røde Pakhus in Rønne
Bornholm’s scenery earns most of the attention, but the island’s food is part of the experience too. Det Røde Pakhus sits in central Rønne and builds modern dishes around local and seasonal ingredients. It is a strong choice for one more ambitious meal during the trip.
The original guide relied on an old Tripadvisor rating, which is not useful for a current recommendation. A better reference is the 2026 Michelin Guide listing, which describes modern cooking, local produce and both à la carte and tasting-menu formats. Menus, prices and opening days can change, so contact the restaurant directly and reserve ahead during the summer season.
If you prefer something more casual, try one of Bornholm’s traditional smokehouses for smoked herring. Gudhjem, Hasle, Allinge and Svaneke all give you good opportunities to combine a harbour walk with lunch.
9. Look for European bison in Almindingen
European bison were introduced to an enclosed area of Almindingen in 2012 as part of a nature and conservation project. The animals influence the woodland by opening up vegetation and creating varied habitats, and seeing one between the trees can be a remarkable experience.
You can enter Bisonskoven on foot, by bicycle or by car, but this is not a zoo. Sightings are never guaranteed, and bison are large wild animals. Keep a generous distance, never feed them, keep dogs on a lead and move away calmly if an animal approaches the road or path.
The fenced area covers about 200 hectares, according to the Danish Nature Agency. Bring binoculars and allow time rather than chasing a sighting. The forest itself is worth visiting even if the bison remain hidden.
10. Ride the zipline over Opalsøen
Opalsøen is a former granite quarry that has become one of northern Bornholm’s most photogenic outdoor areas. A path around the lake and the surrounding cliffs is worthwhile in its own right, and it pairs naturally with nearby Hammershus and Hammerknuden.
In summer, the Tovbanen zipline adds the adrenaline. The current operator describes it as a 290-metre ride with a 47-metre height difference, ending in the lake. For the 2026 season, the listed minimum height is 120 centimetres and maximum weight is 120 kilograms; children under 12 need an adult present on site.
Those conditions, dates and prices can change, so confirm everything on the official Tovbanen website before travelling. The activity is seasonal, advance booking is sensible in high summer, and swimwear is useful because the landing finishes in the water.
How to plan your Bornholm sightseeing
Ten attractions are more than most people need to squeeze into one week, particularly if the holiday should also include slow breakfasts, harbour towns, swimming and ice cream. Choose the experiences that fit your group and combine nearby places rather than driving back and forth across the island.
- North Bornholm: combine Hammershus, Opalsøen and perhaps a walk around Hammerknuden.
- Central Bornholm: Ekkodalen and Bisonskoven sit within Almindingen and work well on the same day.
- North-east coast: pair Døndalen with Helligdomsklipperne, Gudhjem or Østerlars Church.
- South Bornholm: give Dueodde enough time to be a beach stop, not merely a photograph.
A car gives the most freedom, but cycling is a rewarding option for active travellers. Bornholm’s buses also reach many major sights. Routes change with the season, so consult the official BAT route and timetable page instead of relying on an old route number.
Extra Bornholm experiences worth adding
Leave room for the small pleasures that make Bornholm memorable. Eat smoked fish at a harbour smokehouse, browse pottery and glass made by local artists, and stop in towns such as Gudhjem, Svaneke and Allinge. The island has a strong craft tradition, so locally made ceramics can be a better souvenir than something mass-produced.
Hikers can follow sections of the coastal path or choose forest routes of very different lengths. Kayaking, paddleboarding and mountain biking are also available seasonally. Equipment hire and weather conditions vary, so book with a local operator rather than assuming every activity runs daily.
If Bornholm is part of a longer Danish holiday, continue with my guide to the best things to do in Copenhagen. Travellers flying home through the capital may also find my guide to Copenhagen Airport transport useful.
Frequently asked questions
How many days do you need on Bornholm?
Three full days let you sample the north coast, Almindingen and the southern beaches, but five to seven days feel much more relaxed. A week gives you space for changing weather, harbour towns and beach time without turning the holiday into a checklist.
Do you need a car on Bornholm?
No, but a car is convenient if you want to cover several distant attractions in a short stay. Cycling works well for fit travellers, and the BAT bus network reaches many towns and sights. Check seasonal timetables before finalising each day’s route.
What are the best free things to do on Bornholm?
Hammershus ruins, Dueodde beach, Ekkodalen, Døndalen, Helligdomsklipperne, Paradisbakkerne and the landscape around Opalsøen can all be enjoyed without an attraction ticket. Parking, food, equipment and organised activities may still cost extra.
For a first visit, I would prioritise Hammershus, Helligdomsklipperne, Dueodde and one walk in Almindingen. Add Østerlars Church for history and Opalsøen for a more active day. Bornholm is compact, but it is at its best when you resist the temptation to rush.
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