Also known as the "Ninja Temple," this site is filled with secret traps and mechanisms hidden throughout. Built in the early Edo period, it served as a fortress and outpost to prepare for potential attacks by the Tokugawa Shogunate against the Kaga Domain. While it appears to be a two-story building from the outside, it actually consists of seven complex levels. Embark on an exploration led by a guide! (Advance reservation required)