Philipp Franz von Siebold (1796-1866) played a major role in the development of Western scientific disciplines in Japan, in particular medicine. Equally important were his contributions to Western knowledge about Japan. Siebold and Japan depicts the life of this impassioned man, whose love for Japan and its people resulted in the creation of several definitive ethnographic, zoological and botanical collections. These are now part of the collections of the world-renowned National Museum of Ethnology and the Naturalis (National Museum of Natural History) in Leiden, The Netherlands.