I should say I was impressed with the collections. I don't know a lot about Norwegian art, I only know about Edvard Munch, and aside from that, nothing much, so I wanted to visit these museums.
KODE 3 mostly has exhibits from the Golden Age of Norwegian art. It also contains the Rasmus Meyer Collection, consisting of a bulk of Edvard Munch pieces, as well as historical furniture. There are plenty of things to see, and the building is more or less arranged as a mansion, in addition to the various art pieces. The photos above show you the interior display.
Some of the photos I have above depict details of Edvard Munch's paintings. It was interesting to see how he eventually developed his trademark stroke: the faces of the people in his paintings slowly became skulls, which is how his most famous work depicts it as well, as seen in The Scream.
I am not an art fanatic. Nevertheless, whenever I am in a new place, I would like to visit and see art from the place I am visiting, as most of the time, it also gives me a window to what the culture is in that area.