|UNESCO World Heritage site|
Areal view of the castle grounds
|Location||Hagi, Yamaguchi Prefecture, Chūgoku region, Japan|
|Part of||"Hagi Proto-industrial Heritage / Hagi Castle Town" part of Sites of Japan’s Meiji Industrial Revolution: Iron and Steel, Shipbuilding and Coal Mining|
|Criteria||Cultural: (ii), (iv)|
|Inscription||2015 (39th Session)|
Mōri Terumoto lost his holdings around Hiroshima and was moved to Hagi following the Battle of Sekigahara when he supported the losing side. He built Hagi Castle in 1604, and his family continued to rule over the Chōshū Domain until the Meiji Restoration. The castle was unusual as it was constructed mainly at the base of Mount Shizuki, though a few defences are located on the mountain.
In 1874, much of the castle was destroyed, leaving little but ruins.
Hagi Castle is a National Historic site. It was registered as a UNESCO World Heritage Site on July 5, 2015 as part of the Sites of Japan’s Meiji Industrial Revolution: Iron and Steel, Shipbuilding and Coal Mining. It is registered as part of Hagi's Castle Town. 
- "Archived copy". Archived from the original on 2008-03-13. Retrieved 2008-04-17.
- "Archived copy". Archived from the original on 2013-10-16. Retrieved 2012-02-17.
- Schmorleitz, Morton S. (1974). Castles in Japan. Tokyo: Charles E. Tuttle Co. pp. 142–144. ISBN 0-8048-1102-4.
Media related to Hagi Castle at Wikimedia Commons