History of Iwawaki Temple
The foundation of Iwawaki Temple is traditionally attributed to En no Gyoja, the legendary ascetic associated with the origins of Japanese mountain asceticism. The temple is believed to have been established during the Taipo era (701–704).
It was granted the status of an imperial prayer temple during the reign of Emperor Monmu. During the Momoyama period, the temple also received patronage from the Toyotomi family.
Although Iwawaki Temple is now affiliated with the Yuzunenbutsu school, it was originally a temple of the Tendai school.
Several historic structures remain on the temple grounds, including the main hall, believed to date from the early Edo period, and a tahoto pagoda constructed around the end of the Muromachi period.
The Tahoto Pagoda
The Tahoto Pagoda is one of the most important features of Iwawaki Temple. Believed to have been built during the Tenmon era in the 16th century, it has been designated a National Important Cultural Property.
The pagoda stands approximately 13 meters high and contains a valuable wooden seated statue of Dainichi Nyorai (Mahavairocana Buddha). Created in the late Heian period, the statue was made using the yoseki-zukuri technique, in which multiple pieces of wood are joined together. It measures approximately 88.7 centimeters in height.
The pagoda also once housed a statue of Aizen Myoo, a Buddhist deity associated with love and desire. The Kamakura-period statue is designated as a cultural property of Kawachinagano City and is currently deposited at the Sakai City Museum for preservation.
The Main Hall and Natural Surroundings
The main hall is believed to have been constructed during the early Edo period and is designated as a cultural property of Kawachinagano City.
The building has a three-bay front and four-bay sides and features a traditional hogyo-zukuri pyramidal roof. Its architecture provides an important glimpse into the history of Buddhist temple construction in Japan.
The temple is surrounded by rich natural scenery. Its old cedar trees have been included among the Osaka Midori 100, a selection of notable green landscapes in Osaka Prefecture.
The Ancient Kaya Tree of Iwawaki Temple
Another notable natural feature is the giant kaya tree, known as the Kaya of Iwawaki Temple. The tree is estimated to be approximately 400 years old and is protected as a cultural property of Kawachinagano City.
Mount Iwawaki
Mount Iwawaki rises to approximately 897.1 meters and is one of the best-known mountains in Kawachinagano. From the summit, hikers can enjoy wide views across the Osaka Plain and Osaka Bay.
The mountain has also been selected as one of the New 100 Famous Mountains of Japan, making it a popular destination for hiking and nature walks.
Susuki Grasslands and Autumn Scenery
Near the summit of Mount Iwawaki is an approximately 8-hectare thatch grassland. In autumn, the area becomes covered with golden susuki Japanese pampas grass, creating one of the mountain’s most impressive seasonal landscapes.
This scenery is recognized as one of the New Eight Views of Kawachinagano. The thatch harvested from the grassland is also used in the restoration and repair of historic cultural buildings, giving the traditional landscape an important practical role in preserving Japan’s heritage.
Shikisai-kan at Iwawaki-no-Mori
Near the trailhead to Iwawaki Temple is Iwawaki-no-Mori Shikisai-kan, an information and learning facility where visitors can discover the natural environment and history of Mount Iwawaki.
It provides a useful introduction to the area’s landscapes, plants, wildlife, and cultural heritage before or after exploring the mountain and temple.
Cultural Properties
National Important Cultural Properties
Tahoto Pagoda — A late-Muromachi-period structure approximately 13 meters high.
Wooden Seated Statue of Dainichi Nyorai — A late-Heian-period statue made using the yoseki-zukuri technique, measuring approximately 88.7 centimeters in height.
Kawachinagano City Cultural Properties
Statue of Aizen Myoo — A seated wooden statue from the Kamakura period, approximately 58.8 centimeters high.
Main Hall — An early-Edo-period building with a three-bay front, four-bay sides, and a hogyo-zukuri roof.
Kaya Tree of Iwawaki Temple — An approximately 400-year-old tree standing about 20 meters tall, with a trunk circumference of approximately 5.97 meters.
Access
Iwawaki Temple can be reached using public transportation or by car. As the temple is located in a mountainous natural environment, visitors may wish to combine a visit with hiking on Mount Iwawaki and exploring the surrounding attractions.
A Historic Temple in the Mountains of Osaka
Iwawaki Temple offers a rare opportunity to experience both Japan’s Buddhist heritage and its mountain landscapes in one place. Its historic Tahoto pagoda, Buddhist statues, traditional main hall, ancient kaya tree, and surrounding forests reflect centuries of religious and cultural history.
For travelers interested in Japanese Buddhism, historic architecture, hiking, autumn scenery, and traditional cultural heritage, the temple and Mount Iwawaki provide an opportunity to explore a quieter and more natural side of Osaka.
A visit in autumn is particularly rewarding, when the susuki grasslands around the mountain summit create a beautiful seasonal landscape and the surrounding forests take on their autumn colors.