Kaibara Jin'ya, Administrative headquarters in Tamba, Japan

Kaibara Jin'ya was the seat of the Kaibara Domain in present-day Tamba, Hyogo Prefecture. The only structure surviving from its founding is the nagayamon gate of 1714, with a guard station on its left side and a horse-viewing area and gun store on the right. The palace hall, rebuilt in 1820 after a fire, was dismantled after the Meiji Restoration, and about one-fifth of that reconstruction remains. The site is now the grounds of a municipal elementary school.

Oda Nobukane, brother of Nobunaga, entered in 1598 with 36,000 koku, but the line ended in 1650 and the domain became shogunate land for 45 years. In 1695 Nobusuke, grandson of Nobunaga's second son Nobukatsu, arrived with 20,000 koku after a succession dispute. Permission to build the jin'ya came in 1713, and the Oda ruled for ten generations until the Meiji era.

The name Kaibara Jin'ya refers to the district headquarters of the Kaibara Domain, held by the Oda clan from 1695 to the Meiji Restoration. The site now belongs to Soko Elementary School, and the adjacent Kaibara History and Folklore Museum displays materials on the domain and the Oda family.

The jin'ya site is now the grounds of Tamba City Shuko Elementary School, with the Kaibara History and Folklore Museum next door. The surviving nagaya-mon gate stands on this school property, so check access conditions before visiting. Kaibara Station is the nearest rail stop.

The nagaya-mon gate, built in 1714, is the only structure surviving from the site's founding; its left side held the guard post, its right side the horse-viewing area and gun store, and it escaped the 1818 fire that destroyed the palace. The drum turret, of uncertain date, stood at the main gate and later served as a guard and watchtower before being moved to the Ishida Okura Shrine grounds in the Meiji era.