opened in Senkà Â-ji Park in Onomichi, Hiroshima Prefecture, Japan, in 1980. The Museum reopened to a design by Tadao Ando in 2003. The collection includes works by and .
The museum has become notable on the Internet for being visited on a regular basis by two cats, whom the museum guards have to repeatedly turn away due to the museum's strict "no animals" policy. One of the cats, Ken-Chan, passed away in September 2024, and the museum has produced a 2026 calendar in its memory.
The museum contains artworks by artists connected to the city, such as Guilin-in Hirata and Wasaku Kobayashi, as well as artworks by well known foreign artists such as French painter Georges Rouault.
The Museum is located in Senkà Â-ji Park, roughly 20 minutes walk from Onomichi station.