Anraku-ji Temple, Buddhist temple in Bessho Onsen, Japan

Anraku-ji is a Buddhist temple in Bessho Onsen featuring an octagonal three-story pagoda that stands approximately 19 meters tall. The structure represents a rare architectural style found among Japanese temples and is surrounded by pathways and gardens.

The temple's origins are uncertain: it claims founding by Gyōki in the Tenpyō era (729–749) or in the Tenchō era (824–834), and was a Ritsu-sect temple before the Kamakura period. It is first documented when the monk Shōkoku Isen, back from Song China in 1246, established Zen practice there. Under the Hōjō clan of Shioda it became a center of learning in Shinano until 1333; it declined, then was revived around 1580 by Kōzan Junkyō as a Sōtō temple.

In the Denpō-dō hall behind the main hall stand two wooden seated statues carved in 1329 by the carpenter Hyōbu: Enin, a Chinese monk who became the second abbot, and Shōkoku Isen, who studied in China and returned in 1246 on the same ship as Rankei Dōryū. Both are Important Cultural Properties and are noted for their realism.

The pagoda stands on the hillside at the back of the temple grounds, reached by a path and steps from the main hall. Opening hours are 8:00 to 17:00 from March to October and 8:00 to 16:00 from November to February. The temple lies within walking distance of Bessho Onsen station and the onsen district.

The pagoda's 1289-dated timber, found in a beam of the first storey, pushed its construction to the 1290s and makes it a candidate for Japan's oldest Zen-style building, predating the 1320 Buddha Hall of Kōzan-ji. Its three roofs hide a mokoshi pent roof, so it reads as four tiers.