CultureArt CologneTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoCulture04/19/2015April 19, 2015We join Hans Mayer, one of the world's top art dealers and gallery owners, at the Art Cologne. We talk to the expert about the current boom in the art market and take a look at the history of his famous gallery in Düsseldorf.https://p.dw.com/p/1FAKDAdvertisement