With its 17 bunkers linked together, the fortress of Eben-Emael was considered impregnable—or so the Belgian army thought.
Mobile anti-tank barriers, known as Cointet elements, formed the backbone of the Belgian KW line erected in 1939 to prevent a German invasion.
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Once a year, the Arenberg coal mine and two abandoned railway bridges play a starring role during the passage of the spring cycle classic: Paris-Roubaix.
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