The Hash, Marihuana amp;amp; Hemp Museum in Barcelona is dedicated to the cannabis plant and its uses. All aspects of this controversial plant are explained in detail using a variety of media, including short films and photo collections. One of the artworks is a rare watercolor painting by Piet Mondrian. The Museum Collection consists of over 6000 cannabis related items. From cultivation to consumption, from ancient ritual to modern medicine, every aspect of cannabis in human culture is represented in some way.