
Guida
Located in Shimanto, Takaoka District, Kochi Prefecture, Iwamoto-ji is a temple of the Shingon Shuchei school and is renowned as the 37th station of the Shikoku 88 Temple Pilgrimage. It possesses a very ancient history, said to have been founded during the Tenpyo era (729–749) by the monk Gyoki under the request of Emperor Shomu. The most striking feature is the ceiling of the main hall (Hondo). During its reconstruction in 1978, a total of 575 diverse paintings depicting nature, seasonal beauty, and human mandalas were commissioned from across the country to decorate the ceiling. Additionally, the temple is characterized by a unique form of worship involving five principal deities.
The history of Iwamoto-ji stretches back to the Tenpyo era. According to legend, the monk Gyoki founded the temple near the current site of Niida Myojin to pray for the prevention of seven calamities and the bringing of seven blessings. It was once known as 'Niida-dera' and played a vital role in managing local shrines. It is said that when Kobo Daishi (Kukai) visited this land, he divided the deity of Niida Myojin into five shrines, enshrining Fudo Myo-o, Kannon Bosatsu, Amida Nyorai, Yakushi Nyorai, and Jizo Bosatsu as the principal deities. Despite facing periods of decline due to the separation of Shinto and Buddhist-related policies during the Sengoku and Meiji eras, the temple has been meticulously restored to its current magnificent state.

The most iconic sight at Iwamoto-ji is the 'Kaku-tenjo' (coffered ceiling) inside the main hall. The ceiling, composed of 575 different paintings, offers visitors a breathtaking display of diverse colors and intricate designs. Another significant structure is the Daishido Hall, which is approximately 200 years old and holds deep historical value within the temple grounds. Furthermore, the devotion to the five principal deities—Fudo Myo-o, Kannon Bosatsu, Amida Nyorai, Yakushi Nyorai, and Jizo Bosatsu—and the practice of chanting mantras to these deities represent a profound aspect of the temple's spiritual culture.
Iwamoto-ji hosts various traditional events throughout the year. Participating in seasonal ceremonies such as the New Year's special prayer in January, the Setsubun-e (Star Offering) in February, the Kobo Daishi Festival in March, or the Flower Festival (Bussho-e) in April offers a deeper cultural experience. Events also coincide with the Shikoku Pilgrimage seasons in early June and early November. In December, the Joya-no-Kane (New Year's Eve) ceremony is held. The bright daylight hours are the best time to observe the intricate details of the ceiling paintings.
Visitors can connect with deep Buddhist teachings through prayers to the five principal deities. Each deity has its own specific mantra, and chanting them can help achieve spiritual focus. For those on the Shikoku Pilgrimage, staying at the temple's Shukubo (pilgrim lodging) is possible through advanced reservation. Spending time in this historical space allows for quiet self-reflection, which is a vital element of the pilgrimage journey.
Iwamoto-ji is situated on the Konan Plateau near the Shimanto River, a river famous for its pristine waters. The surrounding area of Shimanto features lush natural landscapes, allowing visitors to enjoy a historical scenery that is one with nature. The temple is easily accessible via Route 56, making it a convenient stop when traveling toward Shimanto City.
Please observe the temple rules during your visit. As many transactions involve donations or the purchase of sacred items, it is highly recommended to carry cash (coins and bills). Regarding English support, please check the official website for the latest information on signage and staff availability. Please follow all posted signs regarding photography, as certain areas like the interior of the main hall may be restricted. As there are stairs and uneven surfaces, we recommend wearing comfortable walking shoes.