Obi Castle Museum (Obi Rekishi Museum)

The Obi Castle Museum, also known as the Obi Rekishi Shiryokan, displays artifacts related to the Ito clan's roughly 280-year rule over the Obi Domain during the Edo period, complementing the reconstructed castle grounds a short walk away. The collection includes samurai armor and swords once belonging to the Ito family, domain administrative documents, palanquins used by the clan's senior retainers, and household items from the Yoshokan samurai villa, offering a picture of daily governance and samurai life in a mid-sized Kyushu domain. Exhibits are arranged thematically by category of object, moving from military equipment to domestic furnishings to administrative records, rather than in strict chronological sequence, allowing visitors to compare the ceremonial and everyday sides of Edo-period samurai life. The museum building is a modern structure built to house and conserve the Ito family's donated collection, with climate-controlled cases protecting textiles, lacquerware, and paper documents from humidity common to the region. Since opening, the museum has periodically rotated its holdings, given the fragility of textiles and paper in the collection, so the specific items on display can vary between visits. Restoration work has focused on artifact conservation rather than the building itself, and the museum functions as the primary repository connecting the physical castle ruins outside to the documented history of the domain that once governed from them.