Château d'Oji

Château d'Oji is a Japanese castle in Chiba Prefecture featuring a wooden main keep and secondary structures arranged across fortified grounds with multiple defensive rings. The buildings are positioned in a defensive layout typical of feudal-era Japanese strongholds.

The castle was built during the Sengoku period when regional lords constructed fortifications to defend their territories against rival clans. Its development reflects the military needs and power struggles of this turbulent era.

The castle layout reflects how feudal Japanese society was organized, with samurai living spaces positioned near the main tower while merchants occupied outer zones. Visitors walking through the grounds can still observe this spatial arrangement in the remaining structures.

The castle grounds are accessible by public transportation, with regular bus services from nearby train stations in Chiba Prefecture. The site is well-connected to local transit options for easy visiting.

The stone foundation walls use local materials from the region, creating distinctive patterns that set this castle apart from other Japanese fortifications. This choice of building materials makes it a reflection of regional construction traditions.