To be privately owned
Fort I (Wesel)

Fort I in Wesel is a fortification that once served as part of the defensive structures for the Wesel railway bridge.
History+
Fort I was constructed during the building of the Wesel railway bridge between 1872 and 1874 by the Cöln-Mindener Eisenbahn-Gesellschaft. This bridge was a component of the Hamburg-Venloer railway line. Prussia mandated a route through the then-fortress of Wesel to ensure the military utility of the bridge. Soldiers were intended to defend it in wartime and use it as a staging point for operations to the west.
Source: Wikipedia · Licence: CC BY-SA 4.0
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 51.6486, 6.5858