Hokusai-kan北斎館
Opened in 1976, and 50 years old in 2026. The museum shows Katsushika Hokusai's work from the years he stayed in Obuse in his eighties as a guest of the local merchant Takai Kōzan, including his festival-float ceiling paintings. Admission is ¥1,200 (¥500 students, ¥300 school children) since April 2025. Exhibitions change in rotation: when parts are closed a reduced ticket applies, and on 13 Oct 2026 only the float rooms were open at ¥300, ahead of a 50th anniversary collection show from 14 to 22 October. Closed 31 December only.