It is the only castle in Japan where both the original main keep and the main gate (Otemon) survive together in their original form.
The castle was nicknamed 'Taka-jo' (Hawk Castle) during the Edo period.
The interior staircase was designed to be particularly steep as a defensive measure to hinder attacking samurai.
The castle was surrendered to the new Meiji government in 1871 without a fight, preserving its integrity.
The stone walls utilize a 'nochizumi' construction method that allows for effective drainage during the region's heavy rains.
The original wooden keep was completed in 1749 after the 1727 fire destroyed the previous version.
Kochi Castle is one of only twelve Japanese castles to retain its original wooden main keep (tenshu) constructed in the Edo period. Built between 1601 and 1611 by Yamauchi Kazutoyo, it survived the major fires of 1727 and the WWII air raids. The site features the original honmaru (inner bailey) layout, a rarity in Japan where many keeps are modern concrete reconstructions. Visitors can explore the interior, which houses a collection of historical artifacts from the Yamauchi clan. The structure is perched atop Mt. Otakasa, providing an elevated vantage point over the city of Kochi. Defensive features include stone walls with drainage spouts shaped like tiger heads to protect the foundation from heavy rainfall. The castle grounds are part of Kochi Park and feature numerous cherry blossom trees that bloom in late March.
The Otemon gate from the exterior looking up toward the main keep.
Wear slip-on shoes as you must remove them to enter the wooden main keep.
Prepare for a steep uphill walk from the main gate to the inner courtyard.
Bring socks, as walking in the castle interior is restricted to visitors wearing them.
Do not attempt the walk if you have mobility issues, as the original stone paths are uneven and the climb is steep.
Closed from December 26 to December 31 for year-end maintenance.
Visitors must remove their shoes at the entrance of the keep; wearing socks is mandatory for hygiene and to protect the wooden floors.
