야요이 시대
This three-story building located in the "Citizen's Forest" on Mount Hachidō displays artifacts unearthed in the region, the oldest holdings being pottery and tools dating back to the Yayoi period. The third floor features a gallery for special exhibitions, and visitors can see as far as the Nishiseto Expressway from the museum balcony. Two Yayoi period dwellings were reconstructed on the top of Mount Hachidō and are accessible via several trails leaving from the museum. The exterior of the museum is illuminated at night.