Fort Eben-Emael
Around 24 km (15 miles) north of Liège, the impressive Fort Eben-Emael was built into the rocks after World War I. Supposedly impregnable, it was almost invisible to the eye. However, on May 10, 1940, German gliders landed on the plateau and threw explosives down the air shafts. A day later the 700 Belgian soldiers guarding the fort surrendered to a mere 55 Germans. The fort and its equipment remain intact and can be visited. There’s also a museum containing photographs and weaponry.
