The Armoury Museum (Norwegian: Rustkammeret) is one of Norway’s oldest museums, established in 1826. Rustkammer originates from the Middle Age, when castles and fortresses contained dedicated rooms for storing and maintaining weapons and armour. The Armoury Museum offers an honest encounter with the region’s military past through weapons, uniforms, and historical artefacts.

The museum is housed in the Archbishop’s Palace, located near the Nidaros Cathedral. This historic complex served military purposes for more than 300 years. Today, the Armoury Museum functions both as an army museum and a resistance museum, with a strong emphasis on the military history of Central Norway. Its exhibitions cover a broad historical span, from the Viking Age and the Middle Ages, through the periods of union with Denmark and later Sweden. The Second World War holds a prominent place in the museum and is presented in dedicated exhibitions on the top floor. These displays take visitors from the beginning of the German occupation on 9 April 1940 to the restoration of peace on 8 May 1945. The museum also houses Norway’s finest collection of edged weapons, exhibited throughout the building. In addition, the Armoury Museum offers guided tours both inside the museum and to other military-historical sites in Central Norway.