◎ Religious school: Singon sect chisan school of Shingon Buddhism
◎ Founded: Founded in 1949
◎ Founder: chief priest Ryuto Kanno
◎ Current chief priest: The 2rd abbot, chief priest Ryuko Kanno
◎ Principal image: Fudo Myoo
The old Route 16 (now Route 391) between Abashiri and Kushiro was opened to traffic in 1889(Meiji 22).
At that time, the spring water found near the Pongwenbetsu River in Shitamachi 1-ku was said to quench the thirst of travelers.
Koen-ji Temple is commonly known as Koshimizu Fudo-son, using the name of this spring water (Shimizu).
The principal image of the temple was acquired by the founder abbot from the 48th abbot of Takigayaji Temple in Fukui Prefecture, High Priest Takamoto Kanno Daisojo. The Fudo Myo is said to have been made in the middle of the Edo period.
In 2003(Heisei 15), the Fudo Myo throne statue, which was made of Japanese cypress with a height of 3 shaku, was dedicated.
In 2010(Heisei 22), in commemoration of the 60th anniversary of the founding of the temple, a stone Buddha statue of Fudo Myoo with a height of 5 shaku was placed in front of the main hall to watch over the safety of Yamauchi and the well-being of the area.
- From Abashiri on Route 39, take Route 391 toward Kawayu Kushiro.
- From Route 39 Abashiri, take Route 391 toward Kawayu Kushiro.
Shari-gun, Hokkaido 099-3600