Unpenji is the 66th temple of the Shikoku 88 temple pilgrimage, believed to be founded by Kobo Daishi. In 8th year of the Enreki Era (789) when he was 16 years old, he climbed up this mountain and built the hall. Later, by the order of Emperor Saga, another Zen priest stayed here and carved the statue Kannon-Bosatsu (one who achieved enlightenment) with a thousand hands. It was then enshrined at this temple.

There are about 500 Arhat statues here (statues of Buddha’s disciples), and there’s a tale that everyone can find a look-alike statue. This area is also popular for its fall colours in autumn. This mountain lies between Tokushima, Kagawa and Ehime prefectures and is the highest of the 88 temples, at 1,000 meters above sea level.