Tiny on the outside, this tardis-like museum takes you through the history of Norway's WWII Resistance movement. The layout is very user-friendly, although quite a lot of the English text provided is only a summary of what's available. Highly recommended, even for those who aren't WWII afficionados.
Within the grounds of Akershus Slott (fortress).
Send your feedback or queries to firstname.lastname@example.org