Get Travalour for free on Google Play
Viken county takes its name from the historic region of Viken.
This Fortress was constructed by Denmark-Norway in the 17th century. The fortress is home to several museums and art exhibitions.
Oscarsborg Fortress is a coastal fortress in the Oslofjord. The fortress is best known for sinking the German heavy cruiser "Blücher" on 9 April 1940.