As implied by the name, this museum was created for the artist Murai Masanari (1905-1999), who was a pioneer in the field of modernism painting in Japan.
The 60-year-old wood home located in a residential district on the outskirts of Tokyo built in the 1940s was renovated into an art museum.

The small room that Murai Masanari used as a studio was preserved in the state it was by covering its exterior in a large box, with the gap between the large box and small box being used as display space.

Old materials from parts of the house that were dismantled were used for the exterior walls in an attempt to merge old time with new time.