Akama Shrine

Akama Shrine (Akama Jingu), overlooking the Kanmon Straits in Shimonoseki, Yamaguchi Prefecture, is dedicated to Emperor Antoku, the 81st emperor of Japan, who died here as a child more than 800 years ago.

In 1185, the Kanmon Straits were the setting for the Battle of Dan-no-ura, the final clash of the Genpei War between the Minamoto and Taira (Heike) clans. As the once-powerful Taira faced defeat, their warriors and court ladies threw themselves into the sea. Among them was Emperor Antoku, then just eight years old. According to legend, his grandmother, Nii-no-Ama (Taira no Tokiko), took the young emperor in her arms and, telling him that a capital awaited them beneath the waves, entered the water with him. The tragedy is famously recounted in The Tale of the Heike.

To console the spirit of the child emperor, the imperial court ordered a mausoleum and memorial hall built above his grave. Tended first by nuns and later by priests, the site became a temple known as Amidaji, which drew the devotion of emperors, shoguns, and powerful lords over the centuries.

Following the Meiji-era separation of Shinto and Buddhism, Amidaji was abolished and the site reconstituted as a shrine. It was formally established as Akama-gu in 1875 and elevated and renamed Akama Jingu in 1940. The shrine buildings were destroyed by fire during the Second World War in 1945, and the postwar reconstruction was long and difficult, culminating in the distinctive palace-style complex seen today.

The Suiten-mon Gate

The shrine's most striking feature is the Suiten-mon, its vermilion-and-white main gate, completed in 1958. Its design draws on the poetic image of an undersea palace (ryugu) evoked in Nii-no-Ama's farewell verse – the idea that a capital lay beneath the waves – making it a rare example of "dragon palace"-style shrine architecture. Overlooking the scenic Kanmon Straits, the gate was designated a Registered Tangible Cultural Property in 2018.

Each year, the shrine holds the Sentei Festival in early May, honouring the child emperor and the Taira dead.