The castle and fortress on the harbour headland: free ramparts with views over the fjord, plus the Resistance Museum and Armed Forces Museum inside the walls.
- Address
- Akershus festning, 0150 Oslo
- Hours
- Main gate 06:00-21:00 all year; side gates shorter hours (2026)
- Best time to go
- Any time · About 1.5 h
- Price
- Grounds free; castle interior and museums charge separately
- Price level
- kr
- Free entry
- Free for everyone
Museums and the castle inside the fortress charge separately
Details can change. Check hours and prices before you go.
Good to know
- Drones, grilling and open fires are banned inside the fortress; dogs on leash.
- Walk the ramparts at golden hour; the grounds stay open until 21:00.