Bohus Fortress (also known as
Baahus or
Båhus, originally:
Bagahus) lies along the old
Norwegian–
Swedish border in
Kungälv,
Bohuslän,
Sweden, north east from
Hisingen where the
Göta river splits into two branches ( north of
Gothenburg). It commands the surrounding area from a cliff high, with the river forming a natural moat around it.