Inside the fortress walls: the medieval castle begun by Håkon V around 1299, rebuilt as a Renaissance palace by Christian IV. You walk through royal halls still used by the government for banquets, the castle church, the crypt and the Royal Mausoleum, where members of the Norwegian royal family rest behind a wrought-iron gate.
- Address
- Akershus festning, 0150 Oslo
- Hours
- Sep-Dec and Jan-Apr: Sat-Sun 12:00-17:00; May-Aug: Mon-Sat 10:00-16:00, Sun 12:00-16:00 (forsvarshistoriskmuseum.no, 2026); can close at short notice for state events
- Best time to go
- Afternoon · About 1.5 h
- Price
- Adults NOK 160, students/seniors NOK 110, children 6-17 NOK 80; joint ticket with Forsvarsmuseet and Hjemmefrontmuseet NOK 320 (forsvarshistoriskmuseum.no, 2026)
- Price level
- kr kr
Details can change. Check hours and prices before you go.
Good to know
- Tickets are sold only at the entrance, no advance booking; ticket sales stop 30 minutes before closing.
- Audio guide in English is included in the ticket.
- Free with the Oslo Pass.