The Herbert Foundation is a private collection for contemporary art with a focus on conceptual art from the collection of Annick and Anton Herbert. It houses works by an impressive list of artists such as Marcel Broodthaers, Bruce Nauman, Dan Graham, Mike Kelley, Franz West, Thomas Schütte en Martin Kippenberger.
Best art book shop in town with a great selection! It is run by graphic designer Jurgen Maelfeyt and has a little gallery where there have interesting shows.