Japan Castle Atlas
大友宗麟(義鎮)
Warring States daimyo based in Bungo (today's Oita) who extended his power across northern Kyushu, known as a Christian daimyo. He built Usuki Castle on Niujima, an island in Usuki Bay.
Sorin is said to have turned the whole island into a castle and reclaimed the surrounding tidal flats for his town. The Usuki tourism association notes there was a chapel inside the castle and a Christian training house in the town.
In-depth article
Usuki, Oita
臼杵城
The Christian daimyo Otomo Sorin turned an entire rocky island in the sea into his castle; today only its sheer rock faces, rising from the middle of town, recall that it was once an island.
built the castle on NiujimaRecord source: article
In-depth article
Usuki, Oita
臼杵城
The Christian daimyo Otomo Sorin turned an entire rocky island in the sea into his castle; today only its sheer rock faces, rising from the middle of town, recall that it was once an island.
BuiltRecord source: jokaku
