Fort Deroulede
France · built 1876
The Feste Kameke, renamed Fort Déroulède by the French in 1919, is a military installation near Metz. It is part of the first fortified belt of forts of Metz and had its baptism of fire in late 1944, in the Battle of Metz.
Fort data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).