Oscarsborg
Oscarsborg Fortress is a historic stronghold in the Oslofjord, just outside Drøbak. Built to guard the approach to Norway’s capital, it became legendary on 9 April 1940 when its cannons and hidden torpedo battery sank the German cruiser Blücher. That decisive action delayed the invasion of Oslo and gave Norway’s government vital time to escape.
After serving as an active military site until 2002, Oscarsborg has since been transformed into a cultural landmark, welcoming visitors with museums, guided tours, concerts, and major events in its dramatic courtyard and scenic surroundings.
Explore the Fortress Museum
The Fortress Museum brings history to life with exhibitions about World War II and the sinking of Blücher. It’s the best starting point to understand Oscarsborg’s role in shaping modern Norway.
Cost: Visiting the Oscarsborg Fortress Museum is free of charge.
Opening Hours: Daily, 10:00–17:00
Time Needed: 45–60 minutes
Fortress Museum: open daily 10:00–17:00. (Interior exhibitions in the main fort)
• Cannon Park: outdoors and always accessible.
• Torpedo Battery: accessible via guided 2-hour tours.
• Fire Control Museum: open for guided group visits.
• Coastal Artillery Museum: currently closed.
Website: https://www.forsvarshistoriskmuseum.no/oscarsborg-festning/en
Walk the Coastal Trail
A full loop around the island’s coastal path is a must-do. The walk takes about an hour at a relaxed pace, passing rocky outcrops, small beaches, and scenic fjord views. Keep your eyes open for seabirds and maybe a curious seal popping up in the water.
Alltrails link: https://www.alltrails.com/trail/norway/akershus/oscarsborg-rundt
Or join the Stolpejakten Adventure at Oscarsborg! Stolpejakten is a fun and active way to explore the fortress and its surroundings. The “poles” (stolper) are placed at key spots around Oscarsborg, and participants can register their visits on paper, online, or through the Stolpejakten app. This activity is designed to get everyone moving, young or old, regardless of ability, while discovering hidden corners of the island, enjoying its nature, history, and scenic views. It’s a perfect mix of exercise and exploration, and a unique way to experience Oscarsborg beyond the usual tours. More info will posted closer to June 2026.
Swim at the Beaches
On warm summer days, Oscarsborg’s small coves and beaches are perfect for a refreshing swim. The water is clear, and the surroundings are peaceful, with the fortress rising behind you.
Cost: Free
Time Needed: As long as you’d like
Experience the Oscarsborg Opera
Every summer, the fortress courtyard transforms into a stage for world-class opera productions. The natural acoustics and dramatic setting make it one of Norway’s most unique cultural events.
Cost: Ticket prices vary, usually 400–900 NOK ($40-90 USD)
Time Needed: 2–3 hours
Website: https://www.oscarsborgoperaen.no/english/
More info will posted closer to June 2026.
Relax at the Guest Harbor
If you’re arriving by boat, the Oscarsborg guest harbor welcomes visitors with modern facilities and a front-row view of history. Even without a boat, the marina area is a nice place to stroll, eat, or simply relax by the water.
Cost: Free to visit, docking fees apply for boats
Time Needed: 30 minutes to several hours
Watch Wildlife
The Oslofjord is home to seals, seabirds, and other wildlife. Observant visitors often spot seals poking their heads above water, herons fishing near the shore, or swans gliding along the fjord. A small pair of binoculars can make this a fun activity for kids and adults alike.
Dine with a View at Oscarsborg’s Restaurants
Whether you’re exploring the fortress, strolling along the coastal trails, or arriving by ferry, Oscarsborg offers two charming dining options with stunning fjord views: Oscarsborg Havnekro and Oscarsborg Gjestehavns Spiseri.
Oscarsborg Havnekro
Oscarsborg Havnekro is located near the harbor and offers a cozy, traditional Norwegian atmosphere. Here, you can enjoy classic dishes, fresh seafood, and locally inspired meals while watching boats glide across the Oslofjord. The restaurant is perfect for lunch or a relaxed dinner after a day of sightseeing. The restaurant has room for 45 guests inside, and the sunny outdoor terrace can accommodate 120 guests.
Website and Menu: https://festningshotellene.no/oscarsborg-hotel-resort/havnekroa/#
Hours:
Mon-Thu 12:00 PM-7:00 PM
Sat 12:00 PM-9:00 PM,
Sun 12:00 PM-5:00 PM
Oscarsborg Gjestehavns Spiseri
Oscarsborg Gjestehavns Spiseri, situated in the guest harbor area, provides a casual dining experience with an emphasis on fresh, seasonal ingredients. Its outdoor seating is ideal during warm months, offering visitors a chance to soak up the scenic surroundings while enjoying light meals, coffee, or dessert.
Website and Menu: https://www.oscarsborgspiseri.no/