Walking inside Bohus Fästning (Bohus Fortress) in Kungälv Sweden. 

Bohus Fortress is situated along the old Swedish-Norwegian border and is not only one of the most historical but also one of the most beautiful fortress in the whole Scandinavia. It was built by Norwegians and served as main Norwegian defence against Sweden along the old Swedish-Norwegian border. Bohus fortress now lies in Kungälv, Sweden.