Bargen, Nice to read that you visited Belgium. It is a very tiny country, becoming a bit crowded with lots of traffic but it also has beautiful old cities like Gent, Bruges... and in the south also some nice nature. I was never in your country but I was very close. Two years ago I was in Agustow, in Masuria lake region in Poland which is close to the border with White-Russia. This summer I will normally go to famous nature reserve in Bialowieza with European bisons on the Polish-White-Russian border.
Thank you! Belgium is also a beautiful country, I was there.