The Japan Ukiyo-e Museum (日本浮世絵博物館, Nihon Ukiyo-e Hakubutsukan)(JUM) is a privately owned Japanese art museum in Matsumoto, Nagano Prefecture. It holds over 100,000 Japanese woodblock prints, regarded as the world's largest collection of this form of art. The Japan Ukiyo-e Museum was established in 1982 by Tokichi Sakai, a member of the Sakai merchant family, who have practiced business in Matsumoto for generations. It is based on collections of ukiyo-e owned by the family. The first items were