The name "Iwahashiyama" comes from a legend that En no Gyoja once commanded Japanese gods, including Hitokotonushi no Kami, who is enshrined in present-day Gose City, Nara Prefecture, to build a rock bridge to Mount Kinpu in the Yoshino region of Nara Prefecture. A rock called "Kume no Iwahashi" near the summit is said to be a remnant of this bridge. The mountainside is also dotted with megaliths and unusual rocks, such as the "Nabekamaishi," "Hokotateishi," and "Tainai Kuguri," allowing visitors to explore these megaliths, evoking the romance of ancient times. In 2020, the Shugendo (Katsuragi Shugendo) path, which stretches from Wakayama Prefecture to Nara Prefecture, where En no Gyoja first trained, was designated a Japan Heritage Site.

This gourd-shaped twin-circular tomb is rare nationwide, and is believed to have been constructed in the late Kofun period (late 6th century to early 7th century), when keyhole-shaped tombs were on the decline. With a mound length of 85.8m and a total length including the surrounding moat of 102m, it is the largest twin-circular tomb in Japan and is a nationally designated historic site. Within the stone chamber on the northern hill is a horizontal-type stone chamber, where two house-shaped stone coffins were placed, and grave goods were excavated. A stone chamber was also confirmed to exist on the southern hill, but as it has not been investigated, its contents are unknown. It was designated a national historic site in 1991, and is maintained and preserved as a park, popular as a place to relax and learn about history.

Osaka Prefectural Sayamaike Museum is an outdoor museum that emphasizes the integrated use of the historic Sayamaike Pond, Japan's oldest dam-type reservoir.Operated in collaboration with Osaka Prefecture, Osaka Sayama City, and the Sayamaike Festival Executive Committee, the museum is open to the local community and aims to create new value and appeal for Sayamaike Pond.
This museum specializes in the history of land development, exploring the relationship between water and the earth, focusing on the banks of Sayama Pond and excavated cultural assets. We strive to collect all materials and information related to land development history from an East Asian perspective, and we will publicize and disseminate the results through permanent and special exhibitions. We also aim to become a learning and research center for land development history.

The only Important Preservation District for Groups of Traditional Buildings in the prefecture
Tondabayashi Jinaimachi is the only Jinanimachi in the prefecture designated as an Important Preservation District for Groups of Traditional Buildings. It is perfect for a historical stroll.

A sake brewery reborn as a beer brewery
This historic building, which was used for sake brewing until the 1970s, has been revived as a beer brewery and beer hall.

The agricultural park, Savor Farm, will reopen on Saturday, August 2, 2025. The newly renovated agricultural park features a variety of new facilities that make it even easier to "see, pick, and taste." The park also offers seasonal harvesting experiences.

A spring experience of dyeing your own cherry blossoms
This is an experience where you can enjoy making your own original dyed fabric using 100% cherry blossom dye made by boiling the branches of the cherry blossoms that adorn Sayama Pond.

An ancient temple with deep ties to Kukai and Kusunoki Masashige
This ancient temple was founded in 701 by En no Gyoja, the founder of Shugendo, and rebuilt by Kukai as a training center for the Shingon sect.

The home of the women's Takano surrounded by deep greenery
This historic temple was founded by Gyoki and is also known as Women's Koyasan because women were allowed to visit, whereas Mount Koya was off-limits to women.

The three statues of the three Buddhas (Dainichi Nyorai, Fudo Myoo, and Gosanze Myoo) in the main hall, each over 2 meters tall, and the "Sun, Moon, and Four Seasons Landscape Screen," painted with highly original expression, will be specially exhibited.

Photo (first image): Three Buddhas [National Treasure]
Photo (second image): Folding screen depicting the sun, moon, and four seasons [National Treasure]

It is said that the temple was founded in the Heian period with a stone Buddha carved by Kukai as its principal image. It was founded in the Edo period by a local monk named Jogon. Jogon was a figure who was so devoted that he was worshipped by the 5th Shogun, Tokugawa Tsunayoshi, and other feudal lords. The temple grounds are home to the "Yubae Maple," a tree said to be 800 years old, whose autumn foliage is spectacular. It is a cultural asset that constitutes the Japan Heritage "Town Where You Can Encounter the Middle Ages," and is home to the Seiryoji-style Shaka Nyorai (Important Cultural Property) and a treasure house built in 1927 that is registered as a national tangible cultural property.

A traditional brewery that revived a legendary sake
Founded in 1718, this famous brewery is known for its "Amano Sake." This super-rich, sweet sake, beloved by Toyotomi Hideyoshi, has been revived in modern times.