My husband is an Englishman and I am Dutch. there is definitely a lot to see in Belgium, but if it is spectacular? :-)
Where is it recommended for? I prefer Holland, Rotterdam Incredible, thinking in war time it was flat bombed, and they had to build most from scratch, no rules in building law! the weirdest buildings, I think on the kubushouses and the markethall, but there are loads of architectural pearls knowing you build, I think you would love it. Amsterdam whit its old waters and very causy center, very busy! More North in holland it gets more beautiful and friendlier by the meter. Miles and miles of flat land and water. Tell me what you want to see, what you like and how long you stay and I will send you stuff. :-)