Göta älv
Geographically it borders to Gothenburg Municipality (south), Ale Municipality (east), Lilla Edet Municipality (north-east) and Stenungsund Municipality (north). To the east flows the river Göta älv and to the south, marking the border to Gothenburg, flows the river Nordre älv. On an island in the river, the medieval Bohus Fortress faces the city of Kungälv.