Combining modern conveniences and sophistication with a historical setting surrounded by breathtaking nature, our 86 guest rooms will provide you with all the comfort you need during your stay in Oscarsborg. Every accommodation is tastefully furnished and decorated and boasts top-quality mattresses and bedding, an ensuite bathroom equipped with a bathtub or shower, a flat-screen television, and free Wi-Fi access, offering fantastic views of the Oslofjord.

Oscarsborg Festning’s facilities include a daily free breakfast, a 24-hour reception desk, an onsite full-service restaurant serving delicious seasonal specialities, and an exercise room equipped with modern machinery to keep you active. Oscarsborg’s fortress hosts the Fortress Museum, where you can learn about the island and the castle’s history while enjoying free access to its rooms. Corporate guests visiting Oscarsborg for business can take advantage of our nine spacious and versatile meeting rooms, suitable for hosting team retreats, conferences, banquets, or private events. We also offer a selection of team-building activities you can plan with us, including escape rooms, tunnel battles, and murder mystery games.

Oscarsborg Festning is a short drive from Oslo, located only 64 kilometres away, and, during the warmer months, can be reached via ferry from Aker Brygge.

Oscarsborg Festning, Ascend Hotel Collection

Available Guest Rooms