This museum sits inside the thick stone walls of the 17th-century "Double Battery" building at Akershus Fortress, telling the story of Nazi occupation of Norway from 1940 to 1945 through the lens of human experience rather than military hardware. Open daily 10am-4pm year-round. Admission is roughly 100 NOK for adults with discounts for children/students/seniors, free with Oslo Pass. Plan 1-1.5 hours since the text-heavy exhibits require reading time.
The museum focuses on how ordinary Norwegians—teachers, clergy, students, soldiers—resisted the German regime through civil disobedience, secret intelligence, and sabotage. The layout is chronological, taking you from the shock of invasion to the jubilation of liberation. The design is deliberately atmospheric: early sections are dark and oppressive reflecting loss of freedom, while final sections become brighter as you approach the 1945 liberation.
Most signage appears in both Norwegian and English. Audio guides add personal anecdotes and sound effects that bring exhibits to life beyond the text panels. A memorial for resistance fighters executed at the fortress sits just outside the entrance, often adorned with fresh flowers.
If you want to explore the more tactical side of Norway’s past, take the short walk over to the Armed Forces Museum (Forsvarsmuseet), which is also located within the Akershus Fortress grounds. While the Resistance Museum focuses heavily on the human toll and civilian defiance of WWII, the Armed Forces Museum delivers a deep dive into centuries of military hardware, vehicles, and defense strategy. Best of all, admission is completely free.