Iwabitsu Castle

Iwabitsu is a mountain fortress on Mount Iwabitsu in Higashiagatsuma, Japan. Stone walls and vertical moats shape the terrain, while the central area sits on a flattened summit and defensive remains are still visible throughout.

The fortress was built as a strategic stronghold for local warlords during the 16th century. The site was abandoned in 1615 following a new policy by the central government that allowed only one castle per province.

The name comes from the surrounding mountain, which serves as an important landmark in the region. The fortress today forms part of a network of historical fortifications visited by hikers and history enthusiasts alike.

The walking trail to the main area starts at the Hirasawa access point and takes around 15 minutes. Maps and information are available at the local tourism center before beginning the climb.

The site sits at an elevation of 802 meters (2,631 feet), making it one of the highest fortresses in the region. Despite the altitude, the stonework has survived well over the centuries because the remote location protected it from looting.