行政法人
The museum saw attendance begin to fall after 1925; it was closed in 1945 during the final phases of the Second World War. It was placed under the Ministry of Education in 1947, the Independent Administrative Institution National Museum in 2001 (merging its administration with the Kyoto, Nara, andin 2005Kyushu National Museums), and the Independent Administrative Institution National Institutes for Cultural Heritage in 2007 (merging the IAINM's administration with the national institutes for cultural preservation in Tokyo and Nara).