Odani Castle Ruins

OVERVIEW

One of Japan’s Prominent Mountain Castle Ruins

**IMPORTANT NOTE**
This area is remote and there have been confirmed sightings of animals such as bears. Please do not attempt entry on your own. If you’re interested in exploring, consider joining a guided tour.

Odani Castle Ruins is a national historic site, that once was the residence of the Asai Clan, one of the most prominent warlord families from the Warring States period of Japan (mid 15th – early 17th century). The Azai Clan, situated in Azai, the northeast region of Nagahama during this period, held dominion over the Nagahama and Hikone areas for three generations, with this castle as their base.

Throughout their reign, they engaged with neighboring clans, alternating between advancements and setbacks. Regarded as a prime example of the unpredictable fortunes and individual tragedies that were prevalent in the tumultuous Middle Ages, their legacy embodies the capricious nature of that era. Strategically located at the key points of the Hokuriku and Nakasendo roads and close to Lake Biwa, it was indeed an important castle. Check out the well-preserved remains taking advantage of the terrain and tactically designed stone walls that are still present. It is one of Japan’s five major mountain castles, offering a panoramic view that extends to Lake Biwa from the peak. Also, a great hiking route to enjoy the natural environment and seasonal colors, such as cherry blossoms in spring, fresh greenery in early summer, and autumn leaves in fall.