This island 4 km around just off the coast in the Pacific Ocean is the largest island in Chiba Prefecture. It has a legend that famous warlord Minamoto no Yoritomo, who was defeated in a battle, was given help by Niemon here in 1180. Since then, only the lineal descendants of Niemon only have continued living on the island. The current owner of the island is the 38th generation. Seeing historical spots and sea bathing can be enjoyed. It takes five minutes by boat from Futomi fishing port.
445, Futomihama, Kamogawa, Chiba