Mikado Shrine Main Hall

Mikado Shrine Main Hall: A Gateway to the Baekje Royal Legend in Miyazaki's Mountains

Deep in the cedar-forested mountains of Misato Town in Miyazaki Prefecture, Mikado Shrine (神門神社) quietly guards one of Japan's most compelling cross-cultural legends. Enshrining the exiled Baekje royal prince Jeongga (禎嘉王) alongside Japanese deities, this sacred site bridges the ancient Korean kingdom of Baekje and Japan's spiritual heritage. The shrine's main hall, built in 1661 and designated as a nationally Important Cultural Property, stands as an architectural treasure representing the transition from medieval to early modern shrine construction in southern Kyushu.

Historical Background

Mikado Shrine is traditionally said to have been founded in 718 (Yōrō 2). According to the shrine's own chronicle, the Mikado Jinja Engi, Prince Jeongga of the Kingdom of Baekje — which had been destroyed by the allied forces of Tang China and Silla in 660 — fled across the sea with his sons Fukuchi-ō and Kachi-ō. Landing on the coast of Hyūga Province (modern-day Miyazaki), Prince Jeongga eventually settled in the remote mountain hamlet of Mikado, where he was deeply revered by the local people. After his death, he was enshrined as a deity at this very shrine. His son Fukuchi-ō settled separately in present-day Kijō Town and is enshrined at Hiki Shrine.

While the shrine's early medieval history remains largely unclear, the present main hall was erected in 1661 (Kanbun 1) according to a ridge-board inscription (munafuda). The patron of the construction was Unno Tosa Yukimasa of Mikado-gō, and the master carpenter was Takagi Shōkichi Kiyotsugu from the port town of Hososhima. The hall has been carefully maintained by the local community for over 360 years.

Why It Was Designated an Important Cultural Property

The main hall was designated a nationally Important Cultural Property on December 4, 2000. Several factors contributed to this recognition. The building is a rare seven-bay nagare-zukuri (flowing-style) shrine hall — an unusually large format seldom seen elsewhere in Japan. Its floor plan places a five-bay-by-two-bay inner sanctum (naijin) with wooden board flooring inside the main body (moya), creating a distinctive spatial arrangement with few parallels. The thick-board roofing (atsuita-buki) with staggered ridgelines on both front and rear elevations further distinguishes it architecturally.

While the hall is relatively plain and unadorned in keeping with the austere aesthetic of southern Kyushu shrine architecture, it preserves both medieval techniques and early modern construction methods. This combination makes it an invaluable reference point for understanding how shrine main hall design evolved across the region during the 17th century.

Highlights and What to See

The Main Hall

The seven-bay nagare-zukuri structure stands on natural stone foundations amid towering cedar trees. Its simple elegance and massive scale — unusual for a rural mountain shrine — immediately convey the importance this site held for the local community. Look for the staggered roof ridges and the board-clad walls that preserve the atmosphere of early Edo-period construction.

The Baekje Royal Treasures

The shrine has long safeguarded 33 bronze mirrors dating from the Kofun period through the Muromachi era (designated Miyazaki Prefectural Cultural Properties). Among them are 17 Tang-style mirrors from the Nara period, including the remarkable Tōka Rokka-kyō (Tang Floral Hexapetal Mirror), which is identical to a mirror held in the Shōsōin Repository at Tōdai-ji in Nara — a connection that has fueled scholarly debate about the shrine's Baekje royal lineage for decades.

Shiwasu Matsuri (The Twelfth-Month Festival)

Each year in late January (historically the 12th lunar month), a three-day festival reenacts the annual reunion of father and son. A procession carries the sacred object of Fukuchi-ō from Hiki Shrine in Kijō Town approximately 90 kilometers through the mountains to Mikado Shrine, where it "meets" the enshrined Prince Jeongga. On the final day, participants smear soot (heguro) on each other's faces during the farewell ceremony — a deeply moving and uniquely Japanese ritual. The festival was selected as a national Important Intangible Folk Cultural Property.

Surrounding Attractions

Nishi no Shōsōin (Western Shōsōin Repository)

Located immediately adjacent to the shrine, this faithful replica of the Shōsōin Repository at Tōdai-ji was built in 1996 using centuries-old Kiso cypress timber and the original architectural drawings held by the Imperial Household Agency. Inside, visitors can view the shrine's bronze mirror collection and learn about the Baekje royal legend — and unlike the original Shōsōin in Nara, visitors can actually enter the building.

Kudara no Yakata (Hall of Baekje)

Next to the Nishi no Shōsōin stands a vivid full-scale reconstruction of the guesthouse from the Baekje royal palace at Buyeo in South Korea. Built with cooperation from the Korean Embassy, its colorful dancheong paintwork and Korean roof tiles offer a striking visual contrast to the Japanese shrine architecture nearby. Inside, replicas of Baekje-era national treasures are on display, and visitors can try on traditional Korean hanbok clothing.

Onsen and Nature

The Misato area offers natural hot spring facilities with sodium bicarbonate waters said to benefit the skin. The surrounding Kyushu mountain landscape features pristine rivers, volcanic rock gorges, and excellent freshwater fishing opportunities.