Many people skip over Belgium on their European tours. What a mistake! I found Belgium to be one of the more interesting stops on all of the Europe trips I've taken. The people are so friendly too!
Amsterdam is fabulous too. There are a number of Indonesian restaurants there, thanks to Dutch colonial links. I have a good friend who lives there and she says Indonesian food is almost considered to be part of the national cuisine! Look for "Rijsttafel." It is kind of like the "Pu-Pu Platters" that you can get at some Chinese restaurants, except you get much more. Ours came with an array of about 20 interesting dishes, served with rice. My husband and I really enjoyed the Indonesian cuisine in Amsterdam. Mmmm!
The most moving part of our trip to the Netherlands/Amsterdam was the tour through the Anne Frank house. It is definitely a must see.