Bohus Fortress lies along the old Norwegian–Swedish border in Kungälv, Bohuslän, Sweden, north east from Hisingen where the Göta river splits into two branches . It commands the surrounding area from a cliff 40m high, with the river forming a natural moat around it.Initial constructionThe construction of Bohus Fortress began in 1308 under King Haakon V Magnuson, king of Norway from 1299 to 1319. Håkon V also initiated construction of Norwegian fortresses at Akershus and Vardøhus as part of a broader defensive policy. At the time Bohuslän was Norwegian territory and served as the main Norwegian defence against Sweden, along the coast as well as the strong point for the Bohuslän region from 1308 to 1658.Medieval castleAccording to architect Guthorm Kavli:FortressThe fortress was attacked or besieged 14 times, but was never captured. During the Northern Seven Years' War, in 1563–1570, it was seriously damaged. This occurred in 1566, when 250 Swedish soldiers successfully stormed the northeastern-most tower. The Norwegian commander sent in a volunteer to blow up the ammunition stores underneath the tower, killing the Swedes and repelling the attack. As a reward the family of the volunteer got a piece of land which is still owned by the descendants of this volunteer.
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