B/ON-0110 Haasdonk 11 is a World War II military bunker located in the municipality of Beveren, in the province of East Flanders (Oost-Vlaanderen), Belgium. Situated near the town of Haasdonk, this structure is part of Belgium's extensive wartime defensive infrastructure, likely associated with the fortified lines designed to resist German advances during the 1940 invasion and subsequent occupation.
The bunker is positioned in a historically strategic area along the Scheldt River (Schelde), which played a crucial role during both World Wars due to its importance for port logistics and defensive positioning. While specific architectural details or internal layouts of B/ON-0110 remain undocumented in available sources, it conforms to the general construction style of Belgian defensive installations from the era, typically featuring reinforced concrete walls and compact, functional design suited to infantry support or observation.
Today, the site remains a subject of interest among military history enthusiasts and urbex explorers studying remnants of WWII fortifications across Western Europe. Its preservation status is unclear, though many similar structures in the region have either been demolished, repurposed, or left to decay naturally. As with numerous bunkers in Belgium, Haasdonk 11 reflects the country’s layered military past under German occupation and its integration into broader defensive planning efforts.