Japan Castle Atlas

Honjō Hidetsuna

本庄秀綱

Builder and lord records come from the Japan Castle Foundation list and Japanese Wikipedia.

Connected castles

Numata, Gunma

沼田城

デジタルカメラPublic domainWikimedia Commons

LordRecord source: wikipedia

Nagaoka, Niigata

栃尾城

LordRecord source: wikipedia