Given my love of islands and ferries and museums, you can understand that I'd be charmed by a ferry to an island of museums.
For 50- krone you get wonderful views of Akershus Fortress,
the colourful boats belonging to local sailors,
the container port,
and the distinctive A-frame of the Fram Museum. Though I didn't visit on this occasion, it is wonderful and the trip is well worth it to find out more about the great Norwegian Polar explorers.
In fact I was bound for the Viking Ship Museum, housed in a building that looks more than little bit like a church.
The viking ships are glorious: three of the best-preserved (if not 'the' best-preserved) Viking ships anywhere in the world. The Oseberg ship was the burial place for two women. I like thinking of these two early lady travellers, embarking on their voyage to - they hoped - Valhalla. Perhaps they hoped to make some interesting detours on the way.
Here are some other adventurers - when I saw them out of the corner of my eye, I wondered what they were waiting for. It took a while for the penny to drop that this was tribute to Roald Amundsen and his fellow explorers, looking, looking out to sea.