Koka Ninja House (Koka-ryu Ninjutsu Yashiki)
The former residence of the Mochizuki family, Koka-ryu ninja, built in the Edo period. From the outside, it looks like an ordinary mansion at first glance, but inside it is a ninja house filled with devices and ingenious tricks designed to prevent enemy intrusions. It is not a structure that was relocated or restored for tourism, but a valuable building that has been repaired and maintained while preserving its original location and condition from that time.
I really like attractions that preserve the original appearance of old buildings. The wooden house has a real sense of history, and you can learn about how ninjas used to live and the ingenious ways they protected themselves. It’s much more interesting than just reading about it.







