Ãstre Bolærne
You can stay in the same rooms and beds where the soldiers used to live, and you can as well eat all meals in the restaurant.
Bolærne: During the summer you can take a small ferry to this island in the Oslofjord, the journey cost kr 140 roundtrip, adults, kr 70 roundtrip, children. The journey takes 50 min, oneway. The island was a coastal artillery fortress, opened for the public in 2005. You can stroll along the island - or dive directly from the rocks or just sit in the small harbour looking on the traffic of private summer boats. On top of the island there will be a small viewpoint where you can see all the cruiseboats and ferries passing on the way to and from Oslo.