Charlotte Dematons' books! 
Has anyone heard of her?
Belgian illustrator, really beautiful books:
www.amazon.co.uk/Yellow-Balloon-Charlotte-Dematons/dp/1932425012/ref=sr_1_1?s=books&ie=UTF8&qid=1302954971&sr=1-1
You just want to stare and devour all the little details on the pages.
I've also got her other book, Sinterklaas, which is just as fab, but I couldn't find a link on Amazon. Perfect for all ages.