Crown Redoubt
Gothenburg Municipality, Sweden · built 1700
Skansen Kronan ("the Crown Sconce") is a redoubt on the hill Risåsberget, in the Haga district of Gothenburg, Sweden. The fortress and its twin, Skansen Lejonet, were built to protect the city of Gothenburg against possible Danish attack, and thus had a similar purpose to the sea fort of New Älvsborg, which was built around the same time.
Fort data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).