Dodengang
Twenty-five kilometers (16 miles) north of Ypres, close to Diksmuide---a town, which, like Ypres, was completely flattened during World War I---you can visit the so-called Dodengang (Trench of Death), a network of trenches on the banks of the IJzer river where Belgian troops faced and held off their German adversaries for four years. Make sure to dress warmly on a cold day, as the wind tends to add some extra drama by howling across the plain. The Dodengang is only a mile or so from the Museum aan de IJzer, making it easy to combine a visit to both.