You should go here if you have interest in the first world war. There are still original trenches and there’s a war museum. You get to visit both British and German cemetries and see the vast comparison, one is very light and beautiful and one is hidden away and shadowy, it’s a very sad trip but you will learn all sorts of facts about the war, such as how horses would get pulled up to the neck in mud in the vast rain. I suggest getting a tour bus from England and crossing the ferry, it is a sad but very wonderful day.