[alt-photo] Visiting Paris Belgium Luxembourg and Netherlands

[Bruce]

Hi All
I have just booked a flight to Paris in July and from there we will go on to Luxembourg, Belgium and Netherlands.  Does anyone have some suggestions of must see Alt photo galleries or events in this area. We will be in Paris the first week of July and than work our way up to Amsterdam and leave at the end of the month. 
Thanks for any suggestions.
Cheers
Bruce