The 'Senjojiki' wall is a rare example of a stone wall built in a fan-shaped curve, known as 'ogikobushi', which provides superior structural stability.
The castle is famously associated with the 'Ghost Cat of Nobeoka' folklore, a local legend often linked to the historical figures who once resided here.
The site remains one of the few places in Japan where traditional, non-reconstructed stone fortifications are presented in their original, unadorned state.
The hill was selected as a strategic defensive point due to the natural moats created by the Gokase and Ose rivers flanking the site.
The castle grounds were officially designated as a place of historical significance in the Miyazaki prefecture due to the intact state of its stone foundations.
Nobeokajō Castle Ruins, also known as Nobeoka Castle or 'Thousand-Tatami' Castle, sits on a hill overlooking the Gokase River in Miyazaki. The site is uniquely defined by its 'Senjojiki', an expansive, flat stone-walled plateau originally designed to accommodate a thousand tatami mats for troops. While the original wooden structures were dismantled in the 19th century, the site retains its original massive stone foundations and fortifications. The castle was historically the seat of the Naito clan during the Edo period. Visitors can explore the preserved stone walls, ramparts, and the site of the former honmaru (main keep). The ruins are integrated into Shiroyama Park, which covers the surrounding hillside. The area is particularly recognized for its thousands of cherry trees that bloom in the spring. Archaeological remains of the site include earthen works and defensive trenches.
The Senjojiki stone wall plateau, which offers a wide-angle view of the city and river below.
Wear sturdy walking shoes, as the paths to the upper ruins involve steep inclines and uneven terrain.
Bring your own water or refreshments, as vending machines are limited once you begin the ascent to the main ruins.
Visit during the early spring to witness the cherry blossoms, for which the park is locally famous.
Attempting to climb or sit on the historical stone walls, which are fragile and prone to damage.
Open year-round, but access may be restricted during severe weather conditions like typhoons.
Stay on marked paths to protect the historical stonework; pack out all trash.
