Iwaya Castle

Iwaya Castle is a hilltop fortress on Awaji Island that sits on a steep rise overlooking the northern section of the island and the Seto Inland Sea. The site features several fortified terraces and stone walls that follow the natural shape of the mountain.

The castle gained fame in 1585 during a fierce siege when a small garrison faced a much larger Shimazu force in a dramatic confrontation. This event marked a turning point in regional control during the turbulent Sengoku period.

The castle represents the military architecture of feudal Japan with its position demonstrating the defensive strategies of regional lords during the Sengoku period.

The grounds are accessible via marked trails starting from Iwaya Port, with the route featuring shaded sections and steps that climb upward. Visitors should bring comfortable shoes and water for the ascent.

The garrison's final stand, where all defenders chose death over surrender, earned recognition from their opponents, the Shimazu clan.

Location: Awaji

GPS coordinates: 34.60169,135.00081

Latest update: December 12, 2025 12:07