Liège WW I and WW II - 2h45 drive from Calais:
Both during WWI and WW II, Liège had to face, in less than a generation, the most unexpectedly violent attacks from the German troops. Built in the 19th century, the Liege Defence Line ‘Position fortifiée de Liège' had the very sad privilege of being on the front row of the attacker's assault and of their attempts to invade Western Europe. Most of the forts (Loncin, Eben-Emael ...) are very well-preserved.
Don't hesitate to ask us the "The forts 1914 & 1940" brochure in the Liege Province.