As of 2007 there were some 4,852 items, including a winged Assyrian relief from the palace of Ashurnasirpal II in Nimrud, Mesopotamia, acquired to mark the institution's 25th anniversary.

[1] The museum was founded to house the collection of Shinjiro Yasuhiro, who acquired thousands of objects with the advice of academics from the University of Tokyo.

[2] The museum building has two floors of exhibition galleries to showcase the collection.

It was constructed in 1979 by the city of Okayama from a prize-winning design by Okada Architect & Associates.

[3] This article related to a museum in Japan is a stub.