This museum displays a rich variety of items that convey the history of the Tachibana family: from a suit of armor that once belonged to family ancestor and first feudal lord of Yanagawa, Muneshige Tachibana, to gold and silver lacquer dispatch boxes, cosmetic utensils and Noh theater costumes. The museum also houses a collection of elaborate Edo period dolls, which were loved by successive generations of young Tachibana heiresses. Such a collection is rarely seen even in Japan. Exhibits are rotated throughout the different seasons.